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24 vulnerabilities found for by Avast
CVE-2025-71326 (GCVE-0-2025-71326)
Vulnerability from cvelistv5
Published
2026-06-19 14:16
Modified
2026-07-14 22:26
Severity ?
8.5 (High) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-428 - Unquoted Search Path or Element
Summary
AVAST Antivirus 25.11 contains an unquoted service path vulnerability in the SecureLine service that allows local non-privileged users to execute code with elevated SYSTEM privileges. Attackers can exploit the unquoted binary path in the service configuration to inject malicious executables that execute with high-level system permissions.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | AVAST Antivirus |
Version: 25.11 |
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CVE-2020-37037 (GCVE-0-2020-37037)
Vulnerability from cvelistv5
Published
2026-02-01 14:38
Modified
2026-03-05 01:27
Severity ?
8.5 (High) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-428 - Unquoted Search Path or Element
Summary
Avast SecureLine 5.5.522.0 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in the service configuration to inject malicious code that would execute with LocalSystem account permissions during service startup.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | AVAST SecureLine |
Version: 5.5.522.0 |
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CVE-2025-7007 (GCVE-0-2025-7007)
Vulnerability from cvelistv5
Published
2025-12-01 16:34
Modified
2025-12-01 17:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
NULL Pointer Dereference vulnerability in Avast Antivirus on MacOS, Avast Anitvirus on Linux when scanning a malformed Windows PE file causes the antivirus process to crash.This issue affects Antivirus: 16.0.0; Anitvirus: 3.0.3.
References
Impacted products
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CVE-2025-3500 (GCVE-0-2025-3500)
Vulnerability from cvelistv5
Published
2025-12-01 16:09
Modified
2026-02-26 16:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-190 - Integer Overflow or Wraparound
Summary
Integer Overflow or Wraparound vulnerability in Avast Antivirus (25.1.981.6) on Windows allows Privilege Escalation.This issue affects Antivirus: from 25.1.981.6 before 25.3.
References
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CVE-2025-13032 (GCVE-0-2025-13032)
Vulnerability from cvelistv5
Published
2025-11-11 16:16
Modified
2025-11-14 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3Â on windows allows local attacker to escalate privelages via pool overflow.
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avast | (Free/Premiium/Ultimeat) Antivirus |
Version: 0 < 25.3 |
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CVE-2025-10905 (GCVE-0-2025-10905)
Vulnerability from cvelistv5
Published
2025-11-11 15:52
Modified
2025-11-12 20:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-693 - Protection Mechanism Failure
Summary
Collision in MiniFilter driver in Avast Software Avast Free Antivirus before 25.9 on Windows allows a local attacker with administrative privileges to disable real-time protection and self-defense mechanisms.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Free Antivirus |
Version: 0 < 25.9 |
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CVE-2025-4134 (GCVE-0-2025-4134)
Vulnerability from cvelistv5
Published
2025-05-28 13:53
Modified
2025-05-28 14:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-552 - Files or Directories Accessible to External Parties
Summary
Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Avast Business Antivirus |
Version: 4.5.1 |
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CVE-2024-13962 (GCVE-0-2024-13962)
Vulnerability from cvelistv5
Published
2025-05-09 15:20
Modified
2025-05-09 17:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Link Following Local Privilege Escalation Vulnerability in TuneupSvc in Gen Digital Inc. Avast Cleanup Premium Version 24.2.16593.17810 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via creating a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | CleanUp Premium |
Version: 24.2.16593.17810 |
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CVE-2024-13961 (GCVE-0-2024-13961)
Vulnerability from cvelistv5
Published
2025-05-09 15:20
Modified
2025-05-09 17:38
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Link Following Local Privilege Escalation Vulnerability in TuneupSvc in Avast Cleanup Premium Version 24.2.16593.17810 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via creating a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | CleanUp Premium |
Version: 24.2.16593.17810 |
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CVE-2024-13944 (GCVE-0-2024-13944)
Vulnerability from cvelistv5
Published
2025-05-09 15:18
Modified
2025-10-13 09:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Link Following Local Privilege Escalation Vulnerability in NortonUtilitiesSvc in Norton Utilities Ultimate Version 24.2.16862.6344 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via the creation of a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
References
Impacted products
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CVE-2024-7233 (GCVE-0-2024-7233)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 16:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-23731.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Free Antivirus |
Version: 24.2.6105 (build 24.2.8918.827) |
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CVE-2024-7232 (GCVE-0-2024-7232)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 16:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22963.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Free Antivirus |
Version: 23.12.6094 (build 23.12.8700.813) |
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CVE-2024-7227 (GCVE-0-2024-7227)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22272.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Free Antivirus |
Version: 23.9.6082 |
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CVE-2024-7229 (GCVE-0-2024-7229)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 17:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Cleanup Premium Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Cleanup Premium. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Cleanup Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22892.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Cleanup Premium |
Version: 23.4 (build 15592) |
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CVE-2024-7231 (GCVE-0-2024-7231)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 17:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Cleanup Premium Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Cleanup Premium. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Cleanup Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22894.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Cleanup Premium |
Version: 23.4 (build 15592) |
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CVE-2024-7230 (GCVE-0-2024-7230)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-25 17:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Cleanup Premium Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Cleanup Premium. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Cleanup Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22893.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Cleanup Premium |
Version: 23.4 (build 15592) |
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CVE-2024-7228 (GCVE-0-2024-7228)
Vulnerability from cvelistv5
Published
2024-11-22 21:11
Modified
2024-11-23 01:26
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
Avast Free Antivirus Link Following Denial-of-Service Vulnerability. This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to create a folder. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-22806.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Free Antivirus |
Version: 23.11.6090 Build 23.11.8365.809 |
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CVE-2024-5102 (GCVE-0-2024-5102)
Vulnerability from cvelistv5
Published
2024-06-10 16:15
Modified
2024-08-01 21:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Summary
A sym-linked file accessed via the repair function in Avast Antivirus <24.2 on Windows may allow user to elevate privilege to delete arbitrary files or run processes as NT AUTHORITY\SYSTEM. The vulnerability exists within the "Repair" (settings -> troubleshooting -> repair) feature, which attempts to delete a file in the current user's AppData directory as NT AUTHORITY\SYSTEM. A low-privileged user can make a pseudo-symlink and a junction folder and point to a file on the system. This can provide a low-privileged user an Elevation of Privilege to win a race-condition which will re-create the system files and make Windows callback to a specially-crafted file which could be used to launch a privileged shell instance.
This issue affects Avast Antivirus prior to 24.2.
References
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CVE-2023-42125 (GCVE-0-2023-42125)
Vulnerability from cvelistv5
Published
2024-05-03 02:13
Modified
2024-09-20 19:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-706 - Use of Incorrectly-Resolved Name or Reference
Summary
Avast Premium Security Sandbox Protection Link Following Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the implementation of the sandbox feature. By creating a symbolic link, an attacker can abuse the service to create arbitrary namespace objects. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
. Was ZDI-CAN-20383.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Premium Security |
Version: Avast Premium Security 22.12.6044 (build 22.12.7758.769) |
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CVE-2023-42124 (GCVE-0-2023-42124)
Vulnerability from cvelistv5
Published
2024-05-03 02:13
Modified
2024-09-18 18:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-863 - Incorrect Authorization
Summary
Avast Premium Security Sandbox Protection Incorrect Authorization Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the implementation of the sandbox feature. The issue results from incorrect authorization. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code outside the sandbox at medium integrity.
. Was ZDI-CAN-20178.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Premium Security |
Version: Avast Premium Security 22.12.6044 (build 22.12.7758.769) |
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CVE-2023-1587 (GCVE-0-2023-1587)
Vulnerability from cvelistv5
Published
2023-04-19 18:39
Modified
2025-02-05 16:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Avast and AVG Antivirus for Windows were susceptible to a NULL pointer dereference issue via RPC-interface. The issue was fixed with Avast and AVG Antivirus version 22.11
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AVAST | Avast Antivirus |
Version: 22.5 |
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|
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CVE-2023-1586 (GCVE-0-2023-1586)
Vulnerability from cvelistv5
Published
2023-04-19 18:35
Modified
2025-02-05 16:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the restore process leading to arbitrary file creation. The issue was fixed with Avast and AVG Antivirus version 22.11
References
Impacted products
| Vendor | Product | Version | |||||||
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| Avast | Avast Antivirus |
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CVE-2023-1585 (GCVE-0-2023-1585)
Vulnerability from cvelistv5
Published
2023-04-19 18:27
Modified
2025-02-05 14:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the Quarantine process, leading to arbitrary file/directory deletion. The issue was fixed with Avast and AVG Antivirus version 22.11 and virus definitions from 14 February 2023 or later.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Avast | Avast Antivirus |
Version: 22.5 |
|||||||
|
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CVE-2021-27241 (GCVE-0-2021-27241)
Vulnerability from cvelistv5
Published
2021-03-29 21:05
Modified
2024-08-03 20:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12082.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Avast | Premium Security |
Version: 20.8.2429 (Build 20.8.5653.561) |
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