NULL pointer dereference in Gpac
CVE-2025-55663
A segmentation violation in the Track_SetStreamDescriptor function (isomedia/track.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% 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
Weakness classification (CWE)
References
- infosec.exchange/@sigdevel/116733899601128471 (Exploit, Patch, Third Party Advisory, Mitigation)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55663?
- CVE-2025-55663 is a medium-severity vulnerability in Gpac, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-06-15.
- How severe is CVE-2025-55663?
- Medium severity. CVSS v3 base score is 5.5 out of 10.