CVE-2026-30999 — HIGH (7.5)

Q: What is CVE-2026-30999?

CVE-2026-30999 is a vulnerability with a CVSS score of 7.5 (HIGH). A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Q: How severe is CVE-2026-30999?

CVE-2026-30999 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-30999?

Check the references section above for vendor advisories and patch information. Affected products include: Ffmpeg Ffmpeg.

Vulnerability Description

A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ffmpeg	Ffmpeg	<= 8.0.1

Related Weaknesses (CWE)

CWE-122

References

https://excellent-oatmeal-319.notion.site/CVE-2026-30999-Memory-Leak-e0d88ac53e2ExploitThird Party Advisory
https://ffmpeg.org/doxygen/7.0/zmqsend_8c_source.htmlProduct
https://github.com/FFmpeg/FFmpeg/blob/master/tools/zmqsend.cProduct
https://www.ffmpeg.org/download.htmlProduct

FAQ

What is CVE-2026-30999?

CVE-2026-30999 is a vulnerability with a CVSS score of 7.5 (HIGH). A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

How severe is CVE-2026-30999?

CVE-2026-30999 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-30999?

Check the references section above for vendor advisories and patch information. Affected products include: Ffmpeg Ffmpeg.