Medium severity6.5NVD Advisory· Published Jun 23, 2026· Updated Jun 30, 2026

CVE-2025-55639

Description

GPAC MP4Box v2.4 was discovered to contain a NULL pointer dereference in the gf_isom_add_track_kind() function at isomedia/isom_write.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Gpac/MP4Boxllm-fuzzy
Range: =2.4
Gpac/Gpacllm-fuzzy2 versions
=2.4+ 1 more
- (no CPE)range: =2.4
- cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*range: <26.02.0

Patches

Vulnerability mechanics

References

github.com/gpac/gpac/commit/027ce139dda498ee95df36db9f9f6f3cadce8ec9nvdPatch
www.openwall.com/lists/oss-security/2026/06/26/2nvdExploitMailing ListThird Party Advisory
github.com/gpac/gpac/issues/3260nvdExploitIssue Tracking
github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/23/23_poc.mp4nvdExploit
infosec.exchange/@sigdevel/116769184815236865nvdExploitPatchThird Party Advisory

News mentions

GPAC MP4Box: Seven Memory-Safety CVEs Disclosed in a Single Batch, Fixed in 26.02.0
Vypr Intelligence · Jun 24, 2026

cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000