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.

6785 vulnerabilities reference this CWE, most recent first.

CVE-2026-109280 (GCVE-0-2026-109280)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-12 16:04
VLAI
Title
ImageMagick 7.1.0-20 before 7.1.2-32 Use After Free via -fx Option
Summary
ImageMagick 7.1.0-20 before 7.1.2-32 contains a use after free vulnerability in the -fx option that occurs when a memory allocation fails during a specific operation. Attackers who can supply crafted -fx expressions under memory pressure can trigger freed memory access, causing crashes or memory corruption.
Severity
2 (Low)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: 7.1.0-20 , < 7.1.2-32 (custom)
Unaffected: 7.1.2-32 (custom)
    cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-27 00:00
Credits
Yanhaoxi
Show details on NVD website
To clipboard 

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CVE-2026-109272 (GCVE-0-2026-109272)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-12 16:04
VLAI
Title
ImageMagick 7.1.1-31 before 7.1.2-32 Null Pointer Dereference in PostScript Decoder
Summary
ImageMagick 7.1.1-31 before 7.1.2-32 contains a NULL pointer dereference in the PostScript decoder that is triggered when a policy limit is reached. Attackers can supply a crafted PostScript file for processing to crash the application, causing a denial of service.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: 7.1.1-31 , < 7.1.2-32 (custom)
Unaffected: 7.1.2-32 (custom)
    cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-27 00:00
Credits
Yanhaoxi
Show details on NVD website
To clipboard 

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CVE-2026-109258 (GCVE-0-2026-109258)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-12 16:04
VLAI
Title
ImageMagick 7.1.0-20 before 7.1.2-32 Invalid Memory Free in FX Operation
Summary
ImageMagick 7.1.0-20 before 7.1.2-32 contains an invalid memory free vulnerability in the fx operation that occurs when initialization of an FX runtime entry fails. Attackers can trigger the failed FX runtime initialization to cause an invalid free, resulting in memory corruption and application crashes.
Severity
2 (Low)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: 7.1.0-20 , < 7.1.2-32 (custom)
Unaffected: 7.1.2-32 (custom)
    cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-27 00:00
Credits
w226688
Show details on NVD website
To clipboard 

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CVE-2026-109252 (GCVE-0-2026-109252)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-12 16:04
VLAI
Title
FreeRDP from 3.9.0 before 3.32.0 RDPEAR NULL Pointer Dereference via KERB_RPC_INTERNAL_NAME
Summary
FreeRDP from 3.9.0 before 3.32.0 contains a NULL pointer dereference vulnerability in the RDPEAR NDR reader that allows malicious servers to crash clients via truncated KERB_RPC_INTERNAL_NAME data. Attackers can send a CreateApReqAuthenticatorReq with NameCount of two or more ending before the Names pointer, causing cleanup to dereference a null base and terminate the client.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 3.9.0 , < 3.32.0 (semver)
Unaffected: 3.32.0 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-28 00:00
Credits
HAN-BAMBO
Show details on NVD website
To clipboard 

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CVE-2026-109241 (GCVE-0-2026-109241)

Vulnerability from cvelistv5 – Published: 2026-10-12 16:04 – Updated: 2026-10-12 16:04
VLAI
Title
FreeRDP before 3.32.0 NULL Dereference in Video Redirection Channel
Summary
FreeRDP before 3.32.0 contains a NULL pointer dereference vulnerability in the client video redirection channel that allows malicious servers to crash clients by sending out-of-order messages. Attackers can send a Geometry CLEAR message that nulls presentation->geometry, then send VideoData that dereferences it, causing client denial of service.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 0 , < 3.32.0 (semver)
Unaffected: 3.32.0 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-28 00:00
Credits
w226688
Show details on NVD website
To clipboard 

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CVE-2026-108093 (GCVE-0-2026-108093)

Vulnerability from cvelistv5 – Published: 2026-10-09 16:45 – Updated: 2026-10-09 16:45
VLAI
Title
Gimp: gimp: denial of service via null pointer dereference in xcf simulation parasite loading
Summary
A flaw was found in GIMP. The XCF loader processes image-simulation-intent and image-simulation-bpc parasites without ensuring the parasite data is present before dereferencing it. Opening a specially crafted XCF file with a zero-size simulation parasite can cause a NULL pointer dereference and crash the GIMP application.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 978 records in the last 180 days details
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2548607 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-06 00:00
Credits
Red Hat would like to thank Alexey Khairov (codem4ster), Konstantin Talgarenko (Marcusov), and Nikolay Kravtsov (Kolya080808) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-108063 (GCVE-0-2026-108063)

Vulnerability from cvelistv5 – Published: 2026-10-09 13:26 – Updated: 2026-10-09 15:09
VLAI
Title
Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry
Summary
A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 14:54 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 978 records in the last 180 days details
References
Impacted products
Date Public
2026-10-09 11:06
Credits
Red Hat would like to thank Chamod Anuradha for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-107890 (GCVE-0-2026-107890)

Vulnerability from cvelistv5 – Published: 2026-10-09 04:10 – Updated: 2026-10-09 04:10
VLAI
Summary
OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference caused by repeated IPP group tags in job-creation requests. IPP parsing creates unnamed separator attributes with IPP_TAG_ZERO, but add_job() converts these separators to IPP_TAG_JOB. During job startup, get_options()/ipp_length() subsequently calls strlen() on a NULL attribute name, terminating cupsd and disrupting all queues. A single crafted Print-Job request can trigger the crash when the client can reach the scheduler and submit jobs to an accepting, enabled queue supporting the submitted document format. Anonymous submission is possible when permitted by listener and access-control configuration.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2291 records in the last 180 days details
References
Impacted products
Vendor Product Version
OpenPrinting CUPS Affected: 0 , < 2.4.20 (semver)
    cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-107888 (GCVE-0-2026-107888)

Vulnerability from cvelistv5 – Published: 2026-10-09 04:06 – Updated: 2026-10-09 04:06
VLAI
Summary
OpenPrinting CUPS before 2.4.20 contains a NULL pointer dereference in cupsdCheckJobs() when a job marked job-held-on-create refers to a temporary printer that has been automatically deleted. Temporary-printer cleanup can remove the destination without canceling its held jobs, and the scheduler dereferences the NULL result of cupsdFindDest() while checking holding_new_jobs. This terminates cupsd and interrupts all queues managed by that process. In some plausible scenarios, an unprivileged submission can trigger this.
Severity
5.1 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2291 records in the last 180 days details
References
Impacted products
Vendor Product Version
OpenPrinting CUPS Affected: 0 , < 2.4.20 (semver)
    cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-107778 (GCVE-0-2026-107778)

Vulnerability from cvelistv5 – Published: 2026-10-08 20:15 – Updated: 2026-10-09 11:50
VLAI
Title
MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()
Summary
MIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash services by sending mismatched KRB-CRED arrays. Attackers can send forwarded credentials with more tickets than ticket_info entries through gss_accept_sec_context() to crash GSS-API acceptor services, causing denial of service.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 11:49 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5802 records in the last 180 days details
References
Impacted products
Vendor Product Version
MIT krb5 Affected: 0 , ≤ 1.22.2 (custom)
    cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-05-19 00:00
Credits
Tristan Madani
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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