Buffer overflow in Gpac
CVE-2025-15667
A vulnerability was determined in GPAC up to 2.5-DEV. This vulnerability affects the function gf_isom_nalu_sample_rewrite of the file src/isomedia/avc_ext.c of the component MP4Box. This manipulation of the argument nalu_out_bs causes double free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: f29f955f2a3b5e8e507caad3e52319f961bf37bf. To fix this issue, it is recommended to deploy a patch.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Gpac — versions 2.5-DEV
Weakness classification (CWE)
References
- vuldb.com/vuln/376292 (technical-description, vdb-entry)
- vuldb.com/vuln/376292/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2025-15667 (third-party-advisory)
- vuldb.com/submit/846839 (third-party-advisory)
- github.com/gpac/gpac/issues/3403 (issue-tracking)
- github.com/TimChan2001/pocs/raw/refs/heads/main/poc-gpac-1 (exploit)
- github.com/gpac/gpac/commit/f29f955f2a3b5e8e507caad3e52319f961bf37bf (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2025-15667?
- CVE-2025-15667 is a low-severity vulnerability in Gpac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-07-06.
- How severe is CVE-2025-15667?
- Low severity. CVSS v3 base score is 3.3 out of 10.