NULL pointer dereference in Gpac
CVE-2025-55651
A NULL pointer dereference in the gf_isom_get_user_data_count function (isomedia/isom_read.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 (7.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% 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
- Gpac — versions 2.4
Weakness classification (CWE)
References
- infosec.exchange/@sigdevel/116710512103919834 (Exploit, Third Party Advisory, Mitigation)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-55651?
- CVE-2025-55651 is a medium-severity vulnerability in Gpac, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-06-09.
- How severe is CVE-2025-55651?
- Medium severity. CVSS v3 base score is 5.5 out of 10.