Buffer overflow in Gpac
CVE-2026-7135
A security flaw has been discovered in GPAC up to 26.03-DEV-rev105-g8f39a1eb3-master. Affected by this vulnerability is the function elng_box_read of the file src/isomedia/box_code_base.c of the component MP4Box. Performing a manipulation of the argument elng results in out-of-bounds read. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The patch is named cf6ac48c972eaaee2af270adc3f36615325deb3e. The affected component should be upgraded.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Gpac — versions 26.03-DEV-rev105-g8f39a1eb3-master
Weakness classification (CWE)
References
- vuldb.com/vuln/359734 (technical-description, vdb-entry)
- vuldb.com/vuln/359734/cti (signature, permissions-required)
- vuldb.com/submit/800985 (third-party-advisory)
- github.com/gpac/gpac/issues/3516 (issue-tracking, exploit)
- github.com/gpac/gpac/commit/cf6ac48c972eaaee2af270adc3f36615325deb3e (patch)
- github.com/gpac/gpac/releases/tag/abi-16.8 (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-7135?
- CVE-2026-7135 is a medium-severity vulnerability in Gpac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-04-27.
- How severe is CVE-2026-7135?
- Medium severity. CVSS v3 base score is 5.3 out of 10.