CVE-2026-112060
librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Write via AMF3_Decode
- State
- Published
- Severity
- 6.1 Medium
- Published
- Oct 18, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 18, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.1 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
librtmpRTMPDump |
|
References
- https://hackmd.io/@haindpwn/librtmp-amf3-decode-and-strict-array-oobthird-party-advisory
- https://git.ffmpeg.org/gitweb/rtmpdump.git/blob/138fdb258d9fc26f1843fd1b891180416c9dc575:/librtmp/amf.ctechnical-description
- https://rtmpdump.mplayerhq.hu/product
- VulnCheck Advisory: librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Write via AMF3_Decodethird-party-advisory
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