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VulnerabilityPublished

CVE-2025-70303: GPAC · Heap-based Buffer Overflow

Affects GPACSource CVE Database V5

0

Not known to be exploited · CVSS 5.5 Medium.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubzakkanijia/GPACpkg:github/zakkanijia/GPACOther threatsAffected
  • =2.4.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2025-70303, European organizations should implement the following specific measures: 1) Immediately audit and identify all systems and applications using GPAC v2.4.0 for MP4 processing. 2) Restrict or block the ingestion of untrusted or unauthenticated MP4 files, especially from external sources such as email or public downloads. 3) Employ sandboxing or containerization for media processing workflows to isolate potential crashes and prevent broader system impact. 4) Monitor application logs and system behavior for crashes or anomalies related to MP4 file handling. 5) Engage with GPAC maintainers or vendors for updates or patches and plan prompt deployment once available. 6) Consider implementing input validation or filtering mechanisms to detect malformed MP4 files before processing. 7) Educate users and administrators about the risks of opening or processing suspicious media files. 8) Maintain up-to-date backups and incident response plans to quickly recover from potential DoS events. These steps go beyond generic advice by focusing on controlling untrusted media inputs and isolating vulnerable components.

Description

A heap overflow in the uncv_parse_config() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

References

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