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.
6549 vulnerabilities reference this CWE, most recent first.
CVE-2026-50126 (GCVE-0-2026-50126)
Vulnerability from cvelistv5 – Published: 2026-08-18 16:36 – Updated: 2026-08-18 17:41
VLAI
EPSS
VEX
Title
adaguc-server GeoJSON coordinate parser (CConvertGeoJSON.cpp) vulnerable to out-of-bounds read and NULL pointer dereference
Summary
Adaguc-server is an open source geographical information system to visualize, combine, compare and share real-time meteorological, climatological and remote sensing data via OGC standards. Versions prior to 7.2.2 crash with a memory-safety fault when it parses a GeoJSON document whose geometry contains a malformed coordinate. The coordinate parser in `adagucserverEC/CConvertGeoJSON.cpp` indexes `pt.u.array.values[0]` and `pt.u.array.values[1]` and uses `polygon.u.array.length` as a loop bound without first validating the JSON node type or the coordinate length. A coordinate that is an empty array, a one-element array, a scalar, or `null` leads to an out-of-bounds heap read or a NULL pointer dereference. The same unchecked pattern is present in four geometry branches: `Polygon`, `LineString`, `MultiLineString` and `MultiPolygon`. The vulnerable parser runs whenever the server processes a local GeoJSON file, either a configured GeoJSON dataset or a GeoJSON file exposed through the `AutoResource` feature and requested by an unauthenticated WMS request. A crafted GeoJSON file reliably crashes the backend process that handles that request. Version 7.2.2 patches the vulnerability.
Severity
4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 17:41 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/KNMI/adaguc-server/security/ad… | x_refsource_CONFIRM |
| https://github.com/KNMI/adaguc-server/pull/710 | x_refsource_MISC |
| https://github.com/KNMI/adaguc-server/commit/30df… | x_refsource_MISC |
| https://github.com/KNMI/adaguc-server/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| KNMI | adaguc-server |
Affected:
< 7.2.2
|
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CVE-2026-50032 (GCVE-0-2026-50032)
Vulnerability from cvelistv5 – Published: 2026-07-23 20:53 – Updated: 2026-07-24 13:41
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in MZ Automation libIEC61850
Summary
A NULL pointer dereference in the MMS Write Named Variable List handler, which may allow a network adjacent attacker to crash the server by sending a WriteRequest with an empty listOfData field.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 13:41 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MZ Automation | libIEC61850 |
Affected:
1.0.0 , ≤ 1.6.1
(custom)
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CVE-2026-48985 (GCVE-0-2026-48985)
Vulnerability from cvelistv5 – Published: 2026-06-18 17:30 – Updated: 2026-06-18 19:13
VLAI
EPSS
VEX
Title
pam_usb: NULL Dereference Crash in pusb_is_loginctl_local when loginctl Returns Empty Remote Field
Summary
pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, pusb_is_loginctl_local() can cause a NULL dereference crash when parsing loginctl output. The function calls popen() and reads the result; if the Remote field is only a newline, fgets() succeeds but strtok_r(buf, "\n", &saveptr) returns NULL. A subsequent strcmp(is_remote, "no") then dereferences NULL, causing undefined behavior (typically SIGSEGV) and crashing the PAM module. This can crash the authenticating process (e.g., sudo, login) and, depending on PAM stack configuration, deny access for all users of the affected service. This issue has been fixed in version 0.9.2.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 19:08 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/mcdope/pam_usb/security/adviso… | x_refsource_CONFIRM |
| https://github.com/mcdope/pam_usb/releases/tag/0.9.2 | x_refsource_MISC |
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CVE-2026-48829 (GCVE-0-2026-48829)
Vulnerability from cvelistv5 – Published: 2026-05-24 02:22 – Updated: 2026-06-05 16:00
VLAI
EPSS
VEX
Summary
In GNU SASL before 2.2.3, DIGEST-MD5 has a NULL pointer dereference affecting both clients and servers, via a known token with no accompanying = character. This occurs in lib/digest-md5/getsubopt.c.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 15:07 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
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CVE-2026-48756 (GCVE-0-2026-48756)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:10 – Updated: 2026-08-21 21:44
VLAI
EPSS
VEX
Title
Incus: CreateCustomVolumeFromBackup nil-pointer dereference on volume_snapshots[*].expires_at (sibling-field variant of GHSA-r7w7)
Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateCustomVolumeFromBackup` in `internal/server/storage/backend.go` contains an unguarded `*time.Time` dereference on the `ExpiresAt` field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with `can_create_storage_volumes` permission on any project can crash the `incusd` daemon by uploading a backup tarball whose `volume_snapshots[*].expires_at` field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit `985a1dedf9f3e7ba729c93b654905ed510de25c2` added `if s == nil` at the top of the loop body, but did not guard the adjacent `*snapshot.ExpiresAt` deref 19 lines later. Every other consumer of `Config.VolumeSnapshots[i].ExpiresAt` in this same file already gates the deref with a nil-check — the asymmetric guard is the bug. Version 7.1.0 contains an updated patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 20:58 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lxc/incus/security/advisories/… | x_refsource_CONFIRM |
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CVE-2026-48754 (GCVE-0-2026-48754)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:36 – Updated: 2026-08-26 17:26
VLAI
EPSS
VEX
Title
Incus: Nil-pointer dereference in createDependentVolumesFromBackup on disk.{Volume,VolumeSnapshots,Pool}
Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).createDependentVolumesFromBackup` in `internal/server/storage/backend.go` contains a cluster of unguarded pointer derefs on every dependent-volume entry's `VolumeSnapshots[i]`, `Volume`, and `Pool` sub-fields. An authenticated user with `can_create_instances` permission on any project can crash the `incusd` daemon by uploading an instance backup tarball whose `dependent_volumes[*]` block contains a nil snapshot pointer (or omits `volume:` / `pool:`). This is a sibling-field variant of the 2026-05-04 batch fix `d768f81c0a1d985f35ae56219519822b080bf5e3` ("Properly check dependent volumes on import"). That commit added `if disk == nil` at the top of the outer loop, but did not guard the four sub-pointer fields the loop body dereferences naked. Version 7.1.0 contains an updated patch.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 17:25 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lxc/incus/security/advisories/… | x_refsource_CONFIRM |
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CVE-2026-48438 (GCVE-0-2026-48438)
Vulnerability from cvelistv5 – Published: 2026-08-11 16:59 – Updated: 2026-08-27 22:34
VLAI
EPSS
VEX
Title
CAI Content Credentials | NULL Pointer Dereference (CWE-476)
Summary
CAI Content Credentials is affected by a NULL Pointer Dereference 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
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 18:39 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/content… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Content Credentials Rust SDK |
Affected:
0 , ≤ c2pa-v0.90.5
(custom)
Unaffected: c2pa-v0.90.6 (custom) |
|
| Adobe | Content Credentials Command-Line Tool |
Affected:
0 , ≤ c2patool-v0.27.5
(custom)
Unaffected: c2patool-v0.27.6 (custom) |
|
| Adobe | Content Credentials JS SDK |
Affected:
0 , ≤ @contentauth/c2pa-web@0.12.0
(custom)
Unaffected: @contentauth/c2pa-web@0.12.1 (custom) |
Date Public
2026-08-11 17:00
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CVE-2026-48429 (GCVE-0-2026-48429)
Vulnerability from cvelistv5 – Published: 2026-08-25 17:42 – Updated: 2026-08-27 22:32
VLAI
EPSS
VEX
Title
Substance3D - Designer | NULL Pointer Dereference (CWE-476)
Summary
Substance3D - Designer is affected by a NULL Pointer Dereference 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 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 2026-08-25 19:01 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/substan… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe Substance 3D Designer |
Affected:
0 , ≤ 16.0.4
(semver)
Unaffected: 16.0.5 (semver) |
Date Public
2026-08-25 17:00
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CVE-2026-48267 (GCVE-0-2026-48267)
Vulnerability from cvelistv5 – Published: 2026-07-06 19:45 – Updated: 2026-08-27 22:37
VLAI
EPSS
VEX
Title
DNG SDK | NULL Pointer Dereference (CWE-476)
Summary
DNG SDK versions 1.7.1 2536 and earlier are affected by a NULL Pointer Dereference 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 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 2026-07-07 13:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/dng-sdk… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe DNG Software Development Kit (SDK) |
Affected:
0 , ≤ 1.7.1.2536
(custom)
Unaffected: 1.7.1.2611 (custom) |
Date Public
2026-06-09 17:00
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CVE-2026-48139 (GCVE-0-2026-48139)
Vulnerability from cvelistv5 – Published: 2026-06-19 13:22 – Updated: 2026-06-22 17:31
VLAI
EPSS
VEX
Title
NULL pointer dereference vulnerability in NI grpc-device data moniker service
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:31 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.ni.com/en/support/security/available-… | vendor-advisory |
| https://github.com/ni/grpc-device/security/adviso… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| NI | grpc-device |
Affected:
0 , ≤ 2.17.0
(semver)
cpe:2.3:a:ni:grpc-device:*:*:*:*:*:*:*:* |
|
| NI | InstrumentStudio |
Affected:
0 , ≤ 26.3.0
(semver)
cpe:2.3:a:ni:instrumentstudio:*:*:*:*:*:*:*:* |
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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.