Common Weakness Enumeration
CWE-191
AllowedInteger Underflow (Wrap or Wraparound)
Abstraction: Base · Status: Draft
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
449 vulnerabilities reference this CWE, most recent first.
CVE-2026-82459 (GCVE-0-2026-82459)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:32 – Updated: 2026-10-02 17:43
VLAI
EPSS
VEX
Title
Apache Thrift: Integer underflow in C++ THeaderTransport allows an unauthenticated remote peer to terminate a 32-bit process
Summary
Integer underflow (wrap or wraparound), Out-of-bounds write vulnerability in Apache Thrift C++ 32 bit THeaderTransport.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:43 UTC
Assigner
apache
CNA
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/zf8ppfpl6nqhp53sx… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-82250 (GCVE-0-2026-82250)
Vulnerability from cvelistv5 – Published: 2026-08-28 10:49 – Updated: 2026-08-28 15:52
VLAI
EPSS
VEX
Title
gitoxide gix-packetline before 0.21.5 Denial of Service
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 14:42 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/gitoxide-gix… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.21.5
(semver)
Unaffected: 0.21.5 (semver) cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:* |
Date Public
2026-06-16 00:00
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CVE-2026-81977 (GCVE-0-2026-81977)
Vulnerability from cvelistv5 – Published: 2026-09-08 20:31 – Updated: 2026-09-11 21:29
VLAI
EPSS
VEX
Title
Acrobat Reader | Integer Underflow (Wrap or Wraparound) (CWE-191)
Summary
Acrobat Reader is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 21:28 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound) (CWE-191)
Assigner
adobe
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe Acrobat |
Affected:
0 , ≤ 26.002.21900
(custom)
Unaffected: 26.002.21901 (custom) |
|
| Adobe | Acrobat Reader |
Affected:
0 , ≤ 26.002.21900
(custom)
Unaffected: 26.002.21901 (custom) |
|
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30383
(custom)
Unaffected: 24.001.30429 (custom) |
Date Public
2026-09-08 17:00
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CVE-2026-81881 (GCVE-0-2026-81881)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:05 – Updated: 2026-09-22 17:44
VLAI
EPSS
VEX
Title
radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:33 UTC
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/radareorg/radare2/security/adv… | x_refsource_CONFIRM |
| https://github.com/radareorg/radare2/issues/26229 | x_refsource_MISC |
| https://github.com/radareorg/radare2/commit/1da6e… | x_refsource_MISC |
| https://github.com/radareorg/radare2/releases/tag/6.2.0 | x_refsource_MISC |
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CVE-2026-80303 (GCVE-0-2026-80303)
Vulnerability from cvelistv5 – Published: 2026-11-06 15:59 – Updated: 2026-11-06 15:59
VLAI
EPSS
VEX
Title
Avast WFP stream parser integer underflow causes system crash
Summary
An integer underflow vulnerability in the Avast Windows Filtering Platform (WFP) stream parser on Windows allows denial of service by causing a system crash.
The WFP callout driver processes network stream data and computes length values for packet fragment reassembly. The length calculation does not properly validate input stream sizes against expected boundaries. When processing specially crafted input, the length computation underflows, resulting in allocation or buffer access with an extremely large wrapped-around size value.
The underflow can be triggered remotely via network traffic destined for the filtered port, or locally via crafted data provided to the filtering interface. The resulting memory allocation failure or out-of-bounds access causes a kernel panic and system crash.
Severity
No CVSS data available.
Assigner
GEN
CNA
References
4 references
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Gen Digital | Avast Antivirus, Avast One, Avast Premium Security, Avast Ultimate |
Affected:
0 , < 26.7
(custom)
|
|
| Gen Digital | AVG Antivirus Free, AVG Internet Security, AVG Ultimate |
Affected:
0 , < 26.7
(custom)
|
|
| Gen Digital | Norton Antivirus Plus, Norton 360 Standard, Norton 360 Deluxe, Norton 360 Advanced |
Affected:
0 , < 26.7
(custom)
|
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CVE-2026-78453 (GCVE-0-2026-78453)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-10-31 16:16
VLAI
EPSS
VEX
Title
Microsoft Windows SCSI Class System File Information Disclosure Vulnerability
Summary
Integer underflow (wrap or wraparound) in Microsoft Windows SCSI Class System File allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 19:19 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7725
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7725
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9445
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9445
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2954
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5622
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-78011 (GCVE-0-2026-78011)
Vulnerability from cvelistv5 – Published: 2026-08-27 23:24 – Updated: 2026-09-03 20:49
VLAI
EPSS
VEX
Title
Fireware OS Integer Underflow in Iked Allows Unauthenticated Denial of Service (DoS)
Summary
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:51 UTC
Assigner
WatchGuard
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-78011 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2025.0 , < 2026.2.2
(custom)
Affected: 12.0 , < 12.12.2 (custom) Affected: 2026.3 , < 2026.3.1 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.20
(custom)
|
Date Public
2026-08-27 23:24
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CVE-2026-77488 (GCVE-0-2026-77488)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-10-31 16:16
VLAI
EPSS
VEX
Title
Microsoft SQL Server Information Disclosure Vulnerability
Summary
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 19:44 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3550.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2130.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-76189 (GCVE-0-2026-76189)
Vulnerability from cvelistv5 – Published: 2026-08-25 17:31 – Updated: 2026-08-27 22:32
VLAI
EPSS
VEX
Title
CAI Content Credentials | Integer Underflow (Wrap or Wraparound) (CWE-191)
Summary
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 18:54 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound) (CWE-191)
Assigner
adobe
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/content… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | C2PA Tool |
Affected:
0 , ≤ c2patool-v0.26.70
(custom)
Unaffected: c2patool-v0.27.11 (custom) |
|
| Adobe | Content Credentials Rust SDK |
Affected:
0 , ≤ c2pa-v0.89.0
(custom)
Unaffected: c2pa-v0.90.11 (custom) |
Date Public
2026-08-25 17:00
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CVE-2026-75083 (GCVE-0-2026-75083)
Vulnerability from cvelistv5 – Published: 2026-10-14 16:45 – Updated: 2026-11-04 05:01
VLAI
EPSS
VEX
Title
Integer underflow of the radio-reported frame length causes an out-of-bounds write in the NXP KW41Z IEEE 802.15.4 driver
Summary
The receive path of the NXP KW41Z IEEE 802.15.4 driver, kw41z_rx() in drivers/ieee802154/ieee802154_kw41z.c, computed the payload size as pkt_len = len - KW41Z_FCS_LENGTH in a uint8_t, where len is the frame length reported by the radio. The interrupt handler kw41z_isr() obtained that length from the RX_FRAME_LENGTH field of the ZLL IRQSTS register — a copy of the PHY header length byte of the frame received over the air — and only rejected the value zero. A reported length of one therefore underflowed to pkt_len == 255.
Because the packet is allocated with NET_AF_UNSPEC on a non-Ethernet L2, net_pkt_rx_alloc_with_buffer() does not clamp the request to the interface MTU; with the default fixed-size buffer pool (CONFIG_NET_BUF_FIXED_DATA_SIZE, CONFIG_NET_BUF_DATA_SIZE=128) the allocation succeeded as a chain of two fragments. The subsequent register-to-buffer copy loops write into the first fragment only, so 255 bytes were written into a 128-byte net_buf data block, overrunning it by up to 127 bytes into adjacent network-buffer-pool memory, and reading up to 128 bytes past the end of the radio's PKT_BUFFER_RX register array.
The length field originates from an unauthenticated frame transmitted by any device within 802.15.4 radio range, and is captured by the hardware at PHY-header time — before frame filtering has completed — while the handler samples it after clearing the interrupt status, so an attacker flooding frames with a length byte of one can drive the underflow. The impact is memory corruption in the shared receive buffer pool from interrupt context, most plausibly a crash or corruption of other packets' data; the overflowing bytes are radio register contents rather than attacker-authored data, which bounds the integrity impact.
The fix rejects any length below KW41Z_FCS_LENGTH and additionally verifies net_buf_tailroom() of the first fragment before the copy loops, which also covers the CONFIG_NET_L2_OPENTHREAD variant of the size computation.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:25 UTC
CWE
- CWE-191 - integer-overflow
Assigner
zephyr
CNA
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject | zephyr |
Affected:
1.8.0 , < 4.3.2
(semver)
Affected: 4.4.0 , < 4.5.0 (semver) |
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.