What is CVE-2025-55645?

CVE-2025-55645 is a medium-severity vulnerability in Gpac, classified under Heap-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-06-15.

How severe is CVE-2025-55645?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Gpac

CVE-2025-55645

A heap buffer overflow in the gf_cenc_set_pssh function (isomedia/drm_sample.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

Vulnerability class: Buffer Overflow

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.

Affected products

Gpac
N/a — versions n/a

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, Mitigation)
af854a3a-2127-422b-91ae-364da2661108 (Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-55645?: CVE-2025-55645 is a medium-severity vulnerability in Gpac, classified under Heap-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-06-15.
How severe is CVE-2025-55645?: Medium severity. CVSS v3 base score is 5.5 out of 10.