CVE-2026-27821 (GCVE-0-2026-27821)
Vulnerability from cvelistv5 – Published: 2026-02-26 00:08 – Updated: 2026-02-26 15:15
VLAI
EPSS
VEX
Title
GPAC NHML Demuxer (dmx_nhml.c) Vulnerable to Stack Buffer Overflow
Summary
GPAC is an open-source multimedia framework. In versions up to and including 26.02.0, a stack buffer overflow occurs during NHML file parsing in `src/filters/dmx_nhml.c`. The value of the xmlHeaderEnd XML attribute is copied from att->value into szXmlHeaderEnd[1000] using strcpy() without any length validation. If the input exceeds 1000 bytes, it overwrites beyond the stack buffer boundary. Commit 9bd7137fded2db40de61a2cf3045812c8741ec52 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 15:15 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/gpac/gpac/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/gpac/gpac/commit/9bd7137fded2d… | x_refsource_MISC |
Impacted products
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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