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CVE-2026-30999

HIGH CVSS 3.1: 7.5 EPSS 0.05%
Updated Apr 17, 2026
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-122 (Heap-based Buffer Overflow)
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

CWE-122 Heap-based Buffer Overflow

References 4

https://excellent-oatmeal-319.notion.site/CVE-2026-30999-Memory-Leak-e0d88ac53e…
cve@mitre.org
https://ffmpeg.org/doxygen/7.0/zmqsend_8c_source.html
cve@mitre.org
https://github.com/FFmpeg/FFmpeg/blob/master/tools/zmqsend.c
cve@mitre.org
https://www.ffmpeg.org/download.html
cve@mitre.org
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