CVE-2021-40565
MEDIUMCVSS 5.5/10EPSS 0.85%
Last modified
CVE-2021-40565 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A Segmentation fault caused by a null pointer dereference vulnerability exists in Gpac through 1.0.1 via the gf_avc_parse_nalu function in av_parsers.c when using mp4box, which causes a denial of service.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.
Description
A Segmentation fault caused by a null pointer dereference vulnerability exists in Gpac through 1.0.1 via the gf_avc_parse_nalu function in av_parsers.c when using mp4box, which causes a denial of service.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gpac | Gpac | <= 1.0.1 |
References
- https://github.com/gpac/gpac/commit/893fb99b606eebfae46cde151846a980e689039bPatch, Third Party Advisory
- https://github.com/gpac/gpac/issues/1902Third Party Advisory
- https://github.com/gpac/gpac/commit/893fb99b606eebfae46cde151846a980e689039bPatch, Third Party Advisory
- https://github.com/gpac/gpac/issues/1902Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40565?
A Segmentation fault caused by a null pointer dereference vulnerability exists in Gpac through 1.0.1 via the gf_avc_parse_nalu function in av_parsers.c when using mp4box, which causes a denial of service.
How severe is CVE-2021-40565?
CVE-2021-40565 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40565?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-40565?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST