Heap Out-of-Bounds Read Vulnerability in librtmp (RTMPDump) by FFmpeg
CVE-2026-112061

5.3MEDIUM

Key Information:

Vendor

Rtmpdump

Status
Librtmp
Vendor
CVE Published:
18 October 2026

What is CVE-2026-112061?

The librtmp (RTMPDump) client through version 2.6 is susceptible to a heap out-of-bounds read vulnerability in the AMFProp_Decode function. This flaw occurs when the client processes an AMF0 strict-array, leading to potential crashes. An attacker exploiting this vulnerability can craft a malicious RTMP server response or intercept communications to send an AMF0 payload that contains an improperly formatted array, resulting in the client reading beyond allocated memory. As a result, users may experience service interruptions and potential information leaks.

Affected Version(s)

librtmp 0 <= 2.6

References

https://hackmd.io/@haindpwn/librtmp-amf3-decode-and-stric...
third-party-advisory
https://git.ffmpeg.org/gitweb/rtmpdump.git/blob/138fdb258...
technical-description
https://rtmpdump.mplayerhq.hu/
product

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HaiND from the Post and Telecommunication Institute of Technology
.