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.
6607 vulnerabilities reference this CWE, most recent first.
CVE-2022-2973 (GCVE-0-2022-2973)
Vulnerability from cvelistv5 – Published: 2022-09-23 15:28 – Updated: 2025-04-16 16:09
VLAI
EPSS
VEX
Title
MZ Automation libIEC61850 NULL Pointer Dereference
Summary
MZ Automation's libIEC61850 (versions 1.4 and prior; version 1.5 prior to commit a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e) uses a NULL pointer in certain situations. which could allow an attacker to crash the server.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:54 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MZ Automation | libIEC61850 |
Affected:
All , ≤ 1.4
(custom)
Affected: Version 1.5 , < Commit: a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e (custom) |
Date Public
2022-09-08 00:00
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CVE-2022-2923 (GCVE-0-2022-2923)
Vulnerability from cvelistv5 – Published: 2022-08-22 00:00 – Updated: 2024-08-03 00:53
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0240.
Severity
6.6 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
Impacted products
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CVE-2022-2874 (GCVE-0-2022-2874)
Vulnerability from cvelistv5 – Published: 2022-08-18 00:00 – Updated: 2024-08-03 00:52
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 9.0.0224.
Severity
6.6 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
Impacted products
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CVE-2022-2549 (GCVE-0-2022-2549)
Vulnerability from cvelistv5 – Published: 2022-07-27 14:51 – Updated: 2024-08-03 00:39
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in gpac/gpac
Summary
NULL Pointer Dereference in GitHub repository gpac/gpac prior to v2.1.0-DEV.
Severity
5.7 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
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Impacted products
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CVE-2022-2547 (GCVE-0-2022-2547)
Vulnerability from cvelistv5 – Published: 2022-08-17 20:06 – Updated: 2025-04-16 16:13
VLAI
EPSS
VEX
Title
Softing Secure Integration Server NULL Pointer Dereference
Summary
A crafted HTTP packet without a content-type header can create a denial-of-service condition in Softing Secure Integration Server V1.22.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:54 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://industrial.softing.com/fileadmin/psirt/do… | x_refsource_CONFIRM |
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Softing | Secure Integration Server |
Affected:
V1.22
|
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CVE-2022-2476 (GCVE-0-2022-2476)
Vulnerability from cvelistv5 – Published: 2022-07-19 00:00 – Updated: 2024-08-03 00:39
VLAI
EPSS
VEX
Summary
A null pointer dereference bug was found in wavpack-5.4.0 The results from the ASAN log: AddressSanitizer:DEADLYSIGNAL ===================================================================84257==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x561b47a970c6 bp 0x7fff13952fb0 sp 0x7fff1394fca0 T0) ==84257==The signal is caused by a WRITE memory access. ==84257==Hint: address points to the zero page. #0 0x561b47a970c5 in main cli/wvunpack.c:834 #1 0x7efc4f5c0082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) #2 0x561b47a945ed in _start (/usr/local/bin/wvunpack+0xa5ed) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV cli/wvunpack.c:834 in main ==84257==ABORTING
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/dbry/WavPack/issues/121 | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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CVE-2022-2337 (GCVE-0-2022-2337)
Vulnerability from cvelistv5 – Published: 2022-08-17 20:18 – Updated: 2025-04-16 16:12
VLAI
EPSS
VEX
Title
Softing Secure Integration Server NULL Pointer Dereference
Summary
A crafted HTTP packet with a missing HTTP URI can create a denial-of-service condition in Softing Secure Integration Server V1.22.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:54 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://industrial.softing.com/fileadmin/psirt/do… | x_refsource_CONFIRM |
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Softing | Secure Integration Server |
Affected:
V1.22
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CVE-2022-2309 (GCVE-0-2022-2309)
Vulnerability from cvelistv5 – Published: 2022-07-05 09:00 – Updated: 2025-11-04 16:09
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in lxml/lxml
Summary
NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn't be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered.
Severity
5.3 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/8264e74f-edda-4c40-995… | x_refsource_CONFIRM |
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| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2024… |
Impacted products
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CVE-2022-2279 (GCVE-0-2022-2279)
Vulnerability from cvelistv5 – Published: 2022-07-01 08:15 – Updated: 2024-08-03 00:32
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in bfabiszewski/libmobi
Summary
NULL Pointer Dereference in GitHub repository bfabiszewski/libmobi prior to 0.11.
Severity
6.6 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/68c249e2-779d-4871-b7e… | x_refsource_CONFIRM |
| https://github.com/bfabiszewski/libmobi/commit/c0… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bfabiszewski | bfabiszewski/libmobi |
Affected:
unspecified , < 0.11
(custom)
|
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CVE-2022-2231 (GCVE-0-2022-2231)
Vulnerability from cvelistv5 – Published: 2022-06-28 00:00 – Updated: 2024-08-03 00:32
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in vim/vim
Summary
NULL Pointer Dereference in GitHub repository vim/vim prior to 8.2.
Severity
7.8 (High)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/8dae6ab4-7a7a-4716-a65… | |
| https://github.com/vim/vim/commit/79481367a457951… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisory |
| https://security.gentoo.org/glsa/202305-16 | vendor-advisory |
Impacted products
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"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202305-16"
}
],
"source": {
"advisory": "8dae6ab4-7a7a-4716-a65c-9b090fa057b5",
"discovery": "EXTERNAL"
},
"title": "NULL Pointer Dereference in vim/vim"
}
},
"cveMetadata": {
"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"assignerShortName": "@huntrdev",
"cveId": "CVE-2022-2231",
"datePublished": "2022-06-28T00:00:00.000Z",
"dateReserved": "2022-06-27T00:00:00.000Z",
"dateUpdated": "2024-08-03T00:32:09.511Z",
"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.