DjVuLibre OOB-Write Vulnerability in MMRDecoder
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
DjVuLibre is a GPL implementation of DjVu, a web-centric format for distributing documents and images. Prior to version 3.5.29, the MMRDecoder::scanruns method is affected by an OOB-write vulnerability, because it does not check that the xr pointer stays within the bounds of the allocated buffer. This can lead to writes beyond the allocated memory, resulting in a heap corruption condition. An out-of-bounds read with pr is also possible for the same reason. This issue has been patched in version 3.5.29.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA DjVuLibre (DjvuNet) Fixed in 3.5.29
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2025-53367
References
Other 5
- https://securitylab.github.com/advisories/GHSL-2025-055_DjVuLibre/
- https://github.blog/security/vulnerability-research/cve-2025-53367-an-exploitable-out-of-bounds-write-in-djvulibre
- https://github.com/github/securitylab/tree/main/SecurityExploits/DjVuLibre/MMRDecoder_scanruns_CVE-2025-53367
- https://sourceforge.net/p/djvu/djvulibre-git/ci/33f645196593d70bd5e37f55b63886c31c82c3da
- https://www.openwall.com/lists/oss-security/2025/07/03/1
Sources
- CVE-2025-53367 · CVE Program
- CVE-2025-53367 · NVD
- FIRST EPSS
- CVE-2025-53367 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences