🛡️ CVE-2025-55657 — gpac

🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-476 NVD

7.5

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

A NULL pointer dereference in the gf_odf_vvc_cfg_write_bs function (odf/descriptors.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2025-55657 is classified as CWE-476: NULL Pointer Dereference. A pointer that can be null is used without a check, crashing the process.

Affected software

CVE-2025-55657 is recorded against 2 packages.

gpac
unknown

Timeline and source

Published on 9 June 2026 and last revised on 23 July 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

infosec.exchange
www.openwall.com

CVE-2025-55657 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity HIGH

CVSS Score 7.5

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE CWE-476

Public Exploit ⚠️ Yes

Source NVD

Published 2026-06-09

Updated 2026-08-11

Modified 2026-07-23

Fix URL N/A

Affected Packages

Software	From version	Fixed in
gpac	—	—
unknown	—	—

References

Exploit, Mitigation, Third Party Advisory https://infosec.exchange/@sigdevel/116710754169365223

http://www.openwall.com/lists/oss-security/2026/06/13/16

🔗 NVD 🔗 Mitre

Similar Threats

Exploit Protection

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