Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
1661 vulnerabilities reference this CWE, most recent first.
CVE-2023-54354 (GCVE-0-2023-54354)
Vulnerability from cvelistv5 – Published: 2026-08-25 15:15 – Updated: 2026-09-08 14:57
VLAI
EPSS
VEX
This CVE ID has been rejected as a duplicate.
Replaced by CVE-2023-28484
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CVE-2023-52371 (GCVE-0-2023-52371)
Vulnerability from cvelistv5 – Published: 2024-02-18 03:42 – Updated: 2024-12-04 16:58
VLAI
EPSS
VEX
Summary
Vulnerability of null references in the motor module.Successful exploitation of this vulnerability may affect availability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-20 16:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
huawei
CNA
References
Impacted products
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CVE-2023-52312 (GCVE-0-2023-52312)
Vulnerability from cvelistv5 – Published: 2024-01-03 08:15 – Updated: 2025-06-03 14:43
VLAI
EPSS
VEX
Title
Null pointer dereference in paddle.crop
Summary
Nullptr dereference in paddle.crop in PaddlePaddle before 2.6.0. This flaw can cause a runtime crash and a denial of service.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 19:10 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
Baidu
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PaddlePaddle | PaddlePaddle |
Affected:
0 , < 2.6.0
(git)
|
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CVE-2023-52303 (GCVE-0-2023-52303)
Vulnerability from cvelistv5 – Published: 2024-01-03 08:12 – Updated: 2025-06-17 20:29
VLAI
EPSS
VEX
Title
Segfault in paddle.put_along_axis
Summary
Nullptr in paddle.put_along_axis in PaddlePaddle before 2.6.0. This flaw can cause a runtime crash and a denial of service.
Severity
4.7 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-03 14:35 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
Baidu
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PaddlePaddle | PaddlePaddle |
Affected:
0 , < 2.6.0
(git)
|
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CVE-2023-52302 (GCVE-0-2023-52302)
Vulnerability from cvelistv5 – Published: 2024-01-03 08:12 – Updated: 2024-11-14 18:37
VLAI
EPSS
VEX
Title
Segfault in paddle.nextafter
Summary
Nullptr in paddle.nextafter in PaddlePaddle before 2.6.0. This flaw can cause a runtime crash and a denial of service.
Severity
4.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-11 20:19 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
Baidu
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PaddlePaddle | PaddlePaddle |
Affected:
0 , < 2.6.0
(git)
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CVE-2023-51744 (GCVE-0-2023-51744)
Vulnerability from cvelistv5 – Published: 2024-01-09 10:00 – Updated: 2025-06-09 20:32
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in JT2Go (All versions < V14.3.0.6), Teamcenter Visualization V13.3 (All versions < V13.3.0.13), Teamcenter Visualization V14.1 (All versions < V14.1.0.12), Teamcenter Visualization V14.2 (All versions < V14.2.0.9), Teamcenter Visualization V14.3 (All versions < V14.3.0.6). The affected applications contain a null pointer dereference vulnerability while parsing specially crafted CGM files. An attacker could leverage this vulnerability to crash the application causing denial of service condition.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-09 20:30 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
siemens
CNA
References
1 reference
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | JT2Go |
Affected:
All versions < V14.3.0.6
|
|
| Siemens | Teamcenter Visualization V13.3 |
Affected:
All versions < V13.3.0.13
|
|
| Siemens | Teamcenter Visualization V14.1 |
Affected:
All versions < V14.1.0.12
|
|
| Siemens | Teamcenter Visualization V14.2 |
Affected:
All versions < V14.2.0.9
|
|
| Siemens | Teamcenter Visualization V14.3 |
Affected:
All versions < V14.3.0.6
|
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CVE-2023-51394 (GCVE-0-2023-51394)
Vulnerability from cvelistv5 – Published: 2024-02-23 19:13 – Updated: 2024-08-16 19:31
VLAI
EPSS
VEX
Title
Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash
Summary
High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-26 15:58 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
Silabs
CNA
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| silabs.com | Ember ZNet SDK |
Affected:
0 , < 7.4.0
(7.4.x)
|
|
| silabs | emberznet_sdk |
Affected:
0 , < 7.4.0
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cpe:2.3:a:silabs:emberznet_sdk:*:*:*:*:*:*:*:* |
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CVE-2023-51391 (GCVE-0-2023-51391)
Vulnerability from cvelistv5 – Published: 2024-04-16 19:19 – Updated: 2025-02-13 17:19
VLAI
EPSS
VEX
Title
Micrium OS Network uC-HTTP server header parsing invalid pointer dereference vulnerability
Summary
A bug in Micrium OS Network HTTP Server permits an invalid pointer dereference during header processing - potentially allowing a device crash and Denial of Service.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-26 15:20 UTC
Assigner
Silabs
CNA
References
Impacted products
2 products
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|---|---|---|---|
| silabs.com |
Affected:
0 , < 4.4.2
(semver)
|
||
| silabs | gecko_software_development_kit |
Affected:
0 , < 4.4.2
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cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:* |
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CVE-2023-51368 (GCVE-0-2023-51368)
Vulnerability from cvelistv5 – Published: 2024-09-06 16:26 – Updated: 2024-09-06 17:34
VLAI
EPSS
VEX
Title
QTS, QuTS hero
Summary
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to launch a denial-of-service (DoS) attack via a network.
We have already fixed the vulnerability in the following versions:
QTS 5.1.6.2722 build 20240402 and later
QuTS hero h5.1.6.2734 build 20240414 and later
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-06 17:34 UTC
CWE
Assigner
qnap
CNA
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| QNAP Systems Inc. | QTS |
Affected:
5.1.x , < 5.1.6.2722 build 20240402
(custom)
|
|
| QNAP Systems Inc. | QuTS hero |
Affected:
h5.1.x , < h5.1.6.2734 build 20240414
(custom)
|
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CVE-2023-49275 (GCVE-0-2023-49275)
Vulnerability from cvelistv5 – Published: 2024-04-19 14:24 – Updated: 2024-08-02 21:53
VLAI
EPSS
VEX
Title
Wazuh vulnerable to NULL Pointer Dereference in wazuh-analysisd
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. A NULL pointer dereference was detected during fuzzing of the analysis engine, allowing malicious clients to DoS the analysis engine. The bug occurs when `analysisd` receives a syscollector message with the `hotfix` `msg_type` but lacking a `timestamp`. It uses `cJSON_GetObjectItem()` to get the `timestamp` object item and dereferences it without checking for a `NULL` value. A malicious client can DoS the analysis engine. This vulnerability is fixed in 4.7.1.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-23 00:30 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wazuh/wazuh/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/wazuh/wazuh/blob/e1d5231b31b68… | x_refsource_MISC |
| https://github.com/wazuh/wazuh/blob/e1d5231b31b68… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:wazuh:wazuh:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "wazuh",
"vendor": "wazuh",
"versions": [
{
"status": "affected",
"version": "-"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-49275",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-04-23T00:30:47.195400Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-04T17:27:54.825Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T21:53:45.339Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-4mq7-w9r6-9975",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-4mq7-w9r6-9975"
},
{
"name": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1573",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1573"
},
{
"name": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1578",
"tags": [
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"x_transferred"
],
"url": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1578"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "wazuh",
"vendor": "wazuh",
"versions": [
{
"status": "affected",
"version": "\u003e= 3.2.0, \u003c 4.7.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Wazuh is a free and open source platform used for threat prevention, detection, and response. A NULL pointer dereference was detected during fuzzing of the analysis engine, allowing malicious clients to DoS the analysis engine. The bug occurs when `analysisd` receives a syscollector message with the `hotfix` `msg_type` but lacking a `timestamp`. It uses `cJSON_GetObjectItem()` to get the `timestamp` object item and dereferences it without checking for a `NULL` value. A malicious client can DoS the analysis engine. This vulnerability is fixed in 4.7.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-04-19T14:28:58.190Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
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"references": [
{
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"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-4mq7-w9r6-9975"
},
{
"name": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1573",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1573"
},
{
"name": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1578",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1578"
}
],
"source": {
"advisory": "GHSA-4mq7-w9r6-9975",
"discovery": "UNKNOWN"
},
"title": "Wazuh vulnerable to NULL Pointer Dereference in wazuh-analysisd"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2023-49275",
"datePublished": "2024-04-19T14:24:25.343Z",
"dateReserved": "2023-11-24T16:45:24.311Z",
"dateUpdated": "2024-08-02T21:53:45.339Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.