CVE-2026-41069: CWE-125: Out-of-bounds Read in strukturag libheif
CVE-2026-41069 is a medium severity vulnerability in strukturag's libheif library versions prior to 1. 22. 0. It involves an out-of-bounds read triggered by a malformed HEIF sequence file during core sequence parsing. Specifically, a crafted file with certain count fields set to zero or greater causes the SampleAuxInfoReader constructor to access an empty array, leading to a denial of service (DoS) condition. No confidentiality or integrity impacts are reported. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
The vulnerability in libheif (versions < 1.22.0) arises from improper handling of malformed HEIF sequence files. When the stco.entry_count is zero, resulting in no chunks, but saiz.sample_count is greater than zero, the SampleAuxInfoReader constructor enters a loop that dereferences chunks[0], which does not exist. This out-of-bounds read leads to a denial of service by crashing or destabilizing the application processing the file. The issue is tracked as CWE-125 (Out-of-bounds Read) and CWE-476 (NULL Pointer Dereference).
Potential Impact
Successful exploitation causes denial of service (DoS) by triggering an out-of-bounds read in the libheif library during HEIF file parsing. There is no impact on confidentiality or integrity. The vulnerability requires user interaction (opening a crafted file) and network attack vector is remote with low attack complexity and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid processing untrusted or malformed HEIF files with vulnerable versions of libheif. Monitor vendor channels for updates regarding patches or workarounds.
CVE-2026-41069: CWE-125: Out-of-bounds Read in strukturag libheif
Description
CVE-2026-41069 is a medium severity vulnerability in strukturag's libheif library versions prior to 1. 22. 0. It involves an out-of-bounds read triggered by a malformed HEIF sequence file during core sequence parsing. Specifically, a crafted file with certain count fields set to zero or greater causes the SampleAuxInfoReader constructor to access an empty array, leading to a denial of service (DoS) condition. No confidentiality or integrity impacts are reported. No official patch or remediation guidance is currently available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in libheif (versions < 1.22.0) arises from improper handling of malformed HEIF sequence files. When the stco.entry_count is zero, resulting in no chunks, but saiz.sample_count is greater than zero, the SampleAuxInfoReader constructor enters a loop that dereferences chunks[0], which does not exist. This out-of-bounds read leads to a denial of service by crashing or destabilizing the application processing the file. The issue is tracked as CWE-125 (Out-of-bounds Read) and CWE-476 (NULL Pointer Dereference).
Potential Impact
Successful exploitation causes denial of service (DoS) by triggering an out-of-bounds read in the libheif library during HEIF file parsing. There is no impact on confidentiality or integrity. The vulnerability requires user interaction (opening a crafted file) and network attack vector is remote with low attack complexity and no privileges required.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid processing untrusted or malformed HEIF files with vulnerable versions of libheif. Monitor vendor channels for updates regarding patches or workarounds.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-16T16:43:03.174Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a10c3c2e1370fbb4852e016
Added to database: 5/22/2026, 8:59:46 PM
Last enriched: 5/22/2026, 9:14:49 PM
Last updated: 5/22/2026, 10:01:13 PM
Views: 4
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