GPAC/MP4Box: buffer overflow

GPAC

GPAC/MP4Box vulnerable to global buffer overflow read via crafted AC-4 stream. Affected versions: gpac/gpac prior to fix commit.

Do this now

Upgrade GPAC/MP4Box to version 2.5 or later, and avoid processing untrusted AC-4 streams until patched.

Fix it

Upgrade to GPAC 2.5

First seen: 28 Oct 2026
Last update: 28 Oct 2026, 02:19 UTC
Fixed in: 2.5
Identifiers: CVE-2025-60475
CVSS: 5.5
Source: news
On the menu as: Self-hosted apps

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## GPAC/MP4Box: buffer overflow
Severity: medium. Patch status: patched.
Affected: GPAC
Fixed in: 2.5
Ids: CVE-2025-60475

GPAC/MP4Box vulnerable to global buffer overflow read via crafted AC-4 stream. Affected versions: gpac/gpac prior to fix commit.

## Steps
1. Search the repo, its CI and infra config for GPAC. If present, report the version in use and whether it's affected.
2. Fix by release line: GPAC: 2.5.

## Fix by release line
| Line | State | Fix | Until then |
|---|---|---|---|
| GPAC | fixed | 2.5 | — |

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2025-60475") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://seclists.org/oss-sec/2026/q4/409
https://pwned.coffee/i/gpac-mp4box-buffer-overflow-cve-2025-60475

Timeline

28 Oct 2026, 02:19 UTC
Fix status: no fix yet → patched.
28 Oct 2026
First reported.

Receipt

Exploitation: Public exploit code, no attacks reported
CISA ADP “CISA ADP rates exploitation of CVE-2025-60475 "poc" (SSVC).” source
Fix by release line: Product Affected Fixed in Source
GPAC before 2.5 2.5 CVE record (CNA) checked 28 Oct
Score: CVSS 5.5 (medium). CVSS 3.1 5.5 (CISA ADP) for CVE-2025-60475
Last checked: 28 Oct 2026, 03:19 UTC

Product	Affected	Fixed in	Source
GPAC	before 2.5	2.5	CVE record (CNA) checked 28 Oct

Sources: KEV – CVE record ✓ Vendor ✓

Sources

seclists.org: CVE-2025-60475: GPAC/MP4Box: Global Buffer Overflow Read in gf_ac4_parser_bs on crafted AC-4 stream

Wrong fix version, or a source we missed? Send it back to chef@pwned.coffee with the source, and we'll correct it here.

Totalone coffee