Out-of-bounds write in GPAC AIT parser
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
GPAC up to and including 26.07.0 is affected. The gf_m2ts_decode_ait function in the AIT parser (src/media_tools/ait.c) performs an out-of-bounds write (CWE-787). A remote attacker can trigger it, and a public exploit has been disclosed.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
A vulnerability has been found in GPAC up to 26.07.0. This vulnerability affects the function gf_m2ts_decode_ait of the file src/media_tools/ait.c of the component AIT Parser. Such manipulation leads to out-of-bounds write. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 6d2c21a1a688abb20d0111b608db3b6f44d348f4. Applying a patch is advised to resolve this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for GPAC. The sources advise applying patch 6d2c21a1a688abb20d0111b608db3b6f44d348f4.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-109827
- 2026-10-13 Alias added: GHSA-xg2v-p5jc-x9xf
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-109827 · CVE Program
- CVE-2026-109827 · NVD
- FIRST EPSS
- GHSA-xg2v-p5jc-x9xf · GitHub Advisory Database · CC BY 4.0
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