Common Weakness Enumeration

CWE-476

Allowed

NULL Pointer Dereference

Abstraction: Base · Status: Stable

API response cwe.mitre.org

The product dereferences a pointer that it expects to be valid but is NULL.

1661 vulnerabilities reference this CWE, most recent first.

CVE-2021-28601 (GCVE-0-2021-28601)

Vulnerability from cvelistv5 – Published: 2021-08-24 17:57 – Updated: 2025-04-23 19:34
VLAI
Title
Adobe After Effects NULL Pointer Dereference vulnerability
Summary
Adobe After Effects version 18.2 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:12 UTC
CWE
  • CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
adobe CNA
References
Impacted products
Vendor Product Version
Adobe After Effects Affected: unspecified , ≤ 18.2 (custom)
Affected: unspecified , ≤ None (custom)
Create a notification for this product.
Date Public
2021-06-08 00:00
Show details on NVD website
To clipboard 

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CVE-2021-28166 (GCVE-0-2021-28166)

Vulnerability from cvelistv5 – Published: 2021-04-07 18:50 – Updated: 2024-08-03 21:40
VLAI
Summary
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
eclipse CNA
References
Impacted products
Vendor Product Version
The Eclipse Foundation Eclipse Mosquitto Affected: 2.0 , < unspecified (custom)
Affected: unspecified , ≤ 2.0.9 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-27632 (GCVE-0-2021-27632)

Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - Improper Input Validation (CWE-476)
Assigner
sap CNA
References
Impacted products
Vendor Product Version
SAP SE SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) Affected: < KRNL32NUC - 7.22
Affected: < 7.22EXT
Affected: < KRNL64NUC - 7.22
Affected: < 7.49
Affected: < KRNL64UC - 8.04
Affected: < 7.22
Affected: < 7.53
Affected: < 7.73
Affected: < KERNEL - 7.22
Affected: < 8.04
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-27631 (GCVE-0-2021-27631)

Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - Improper Input Validation (CWE-476)
Assigner
sap CNA
References
Impacted products
Vendor Product Version
SAP SE SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) Affected: < KRNL32NUC - 7.22
Affected: < 7.22EXT
Affected: < KRNL64NUC - 7.22
Affected: < 7.49
Affected: < KRNL64UC - 8.04
Affected: < 7.22
Affected: < 7.53
Affected: < 7.73
Affected: < KERNEL - 7.22
Affected: < 8.04
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-27630 (GCVE-0-2021-27630)

Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - Improper Input Validation (CWE-476)
Assigner
sap CNA
References
Impacted products
Vendor Product Version
SAP SE SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server) Affected: < KRNL32NUC - 7.22
Affected: < 7.22EXT
Affected: < KRNL64NUC - 7.22
Affected: < 7.49
Affected: < KRNL64UC - 8.04
Affected: < 7.22
Affected: < 7.53
Affected: < 7.73
Affected: < KERNEL - 7.22
Affected: < 8.04
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-27607 (GCVE-0-2021-27607)

Vulnerability from cvelistv5 – Published: 2021-06-09 00:00 – Updated: 2024-08-03 21:26
VLAI
Summary
SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThSncIn() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - Improper Input Validation (CWE-476)
Assigner
sap CNA
References
Impacted products
Vendor Product Version
SAP SE SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher) Affected: < KRNL32NUC - 7.22
Affected: < 7.22EXT
Affected: < KRNL32UC - 7.22
Affected: < KRNL64NUC - 7.22
Affected: < 7.49
Affected: < KRNL64UC - 8.04
Affected: < 7.22
Affected: < 7.53
Affected: < 7.73
Affected: < KERNEL - 7.22
Affected: < 8.04
Affected: < 7.77
Affected: < 7.81
Affected: < 7.82
Affected: < 7.83
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-26927 (GCVE-0-2021-26927)

Vulnerability from cvelistv5 – Published: 2021-02-23 19:03 – Updated: 2024-08-03 20:33
VLAI
Summary
A flaw was found in jasper before 2.0.25. A null pointer dereference in jp2_decode in jp2_dec.c may lead to program crash and denial of service.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a jasper Affected: before 2.0.25
Show details on NVD website
To clipboard 

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CVE-2021-25674 (GCVE-0-2021-25674)

Vulnerability from cvelistv5 – Published: 2021-03-15 17:03 – Updated: 2024-08-03 20:11
VLAI
Summary
A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). An attacker with local access to the system could cause a Denial-of-Service condition in the application when it is used to open a specially crafted file. As a consequence, a NULL pointer deference condition could cause the application to terminate unexpectedly and must be restarted to restore the service.
Severity
No CVSS data available.
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
siemens CNA
References
Impacted products
Vendor Product Version
Siemens SIMATIC S7-PLCSIM V5.4 Affected: All versions
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Show details on NVD website
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CVE-2021-25491 (GCVE-0-2021-25491)

Vulnerability from cvelistv5 – Published: 2021-10-06 17:10 – Updated: 2024-08-03 20:03
VLAI
Summary
A vulnerability in mfc driver prior to SMR Oct-2021 Release 1 allows memory corruption via NULL-pointer dereference.
Severity
2.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - Null Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Samsung Mobile Samsung Mobile Devices Affected: P(9.0), Q(10.0), R(11.0) , < SMR Oct-2021 Release 1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-25462 (GCVE-0-2021-25462)

Vulnerability from cvelistv5 – Published: 2021-09-09 18:05 – Updated: 2024-08-03 20:03
VLAI
Summary
NULL pointer dereference vulnerability in NPU driver prior to SMR Sep-2021 Release 1 allows attackers to cause memory corruption.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Samsung Mobile Samsung Mobile Devices Affected: P(9.0), Q(10.0) , R(11.0) devices with Exynos chipsets , < SMR Sep-2021 Release 1 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation MIT-56
Implementation

For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].

Mitigation
Requirements

Select a programming language that is not susceptible to these issues.

Mitigation
Implementation

Check the results of all functions that return a value and verify that the value is non-null before acting upon it.

Mitigation
Architecture and Design

Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.

Mitigation
Implementation

Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.

No CAPEC attack patterns related to this CWE.

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