Buffer overflow in Gpac
CVE-2026-15185
A vulnerability was determined in GPAC 26.03-DEV. This affects the function vobsub_read_idx of the file /src/media_tools/vobsub.c of the component MP4Box. Executing a manipulation of the argument num_langs can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called 532097084729a936bcdf6a27c41003f3bd7dc3ff. It is best practice to apply a patch to resolve this issue. Two different commits were applied to fix this issue.
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. 5th 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 26.03-DEV
Weakness classification (CWE)
References
- vuldb.com/vuln/377111 (technical-description, vdb-entry)
- vuldb.com/vuln/377111/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15185 (third-party-advisory)
- vuldb.com/submit/851214 (third-party-advisory)
- github.com/gpac/gpac/issues/3611 (issue-tracking, exploit)
- github.com/gpac/gpac/commit/aa0fb77b82e51b159a2024c440cdf6b571b14d81 (patch)
- github.com/gpac/gpac/commit/532097084729a936bcdf6a27c41003f3bd7dc3ff (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-15185?
- CVE-2026-15185 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 2026-07-09.
- How severe is CVE-2026-15185?
- Low severity. CVSS v3 base score is 3.3 out of 10.