struktur libheif up to 1.19.5 image-items/iden.cc ImageItem_iden null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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2.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in struktur libheif up to 1.19.5. Affected by this vulnerability is the function ImageItem_iden of the file image-items/iden.cc. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2025-43966. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in struktur libheif up to 1.19.5. It has been rated as problematic. Affected by this issue is the function ImageItem_iden of the file image-items/iden.cc. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

libheif before 1.19.6 has a NULL pointer dereference in ImageItem_iden in image-items/iden.cc.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-43966 since 04/20/2025. The exploitation is known to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 253450 (TencentOS Server 4: libheif (TSSA-2025:0631)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.19.6 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch b38555387e4b5dcf036fe45b0c440aca19b7b69c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (253450) and EUVD (EUVD-2025-11958). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.7
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.9
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 253450
Nessus Name: TencentOS Server 4: libheif (TSSA-2025:0631)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libheif 1.19.6
Patch: b38555387e4b5dcf036fe45b0c440aca19b7b69c

Timelineinfo

04/20/2025 🔍
04/21/2025 +1 days 🔍
04/21/2025 +0 days 🔍
08/21/2025 +122 days 🔍

Sourcesinfo

Advisory: b38555387e4b5dcf036fe45b0c440aca19b7b69c
Status: Confirmed

CVE: CVE-2025-43966 (🔍)
GCVE (CVE): GCVE-0-2025-43966
GCVE (VulDB): GCVE-100-305756
EUVD: 🔍

Entryinfo

Created: 04/21/2025 03:05
Updated: 08/21/2025 21:40
Changes: 04/21/2025 03:05 (69), 05/25/2025 01:03 (1), 08/21/2025 21:40 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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