CVE-2026-112060
librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Write via AMF3_Decode
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
librtmp in RTMPDump through 2.6 contains an out-of-bounds read and heap out-of-bounds write vulnerability because AMF3_Decode ignores AMF3 property decode failures. Malicious RTMP servers or man-in-the-middle attackers can send oversized AMF3 string lengths, and with the token option DecodeTEA corrupts heap memory and leaks heap bytes.
| CWE | CWE-787 |
| Vendor | rtmpdump |
| Product | librtmp |
| Published | Oct 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
Affected Versions
RTMPDump / librtmp
0 ≤ 2.6
References
hackmd.io: https://hackmd.io/@haindpwn/librtmp-amf3-decode-and-strict-array-oob git.ffmpeg.org: https://git.ffmpeg.org/gitweb/rtmpdump.git/blob/138fdb258d9fc26f1843fd1b891180416c9dc575:/librtmp/amf.c rtmpdump.mplayerhq.hu: https://rtmpdump.mplayerhq.hu/ vulncheck.com: https://www.vulncheck.com/advisories/librtmp-rtmpdump-through-2.6-heap-out-of-bounds-write-via-amf3-decode
Credits
HaiND from the Post and Telecommunication Institute of Technology