What’s Vulnerable › Vulnerabilities

CVE-2026-112060: librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Write via AMF3_Decode

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-19
• Weakness: CWE-787

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.

Affected products

• RTMPDump librtmp: through 2.6

References

• https://git.ffmpeg.org/gitweb/rtmpdump.git/blob/138fdb258d9fc26f1843fd1b891180416c9dc575:/librtmp/amf.c
• https://hackmd.io/@haindpwn/librtmp-amf3-decode-and-strict-array-oob
• https://rtmpdump.mplayerhq.hu/
• https://www.vulncheck.com/advisories/librtmp-rtmpdump-through-2.6-heap-out-of-bounds-write-via-amf3-decode

Get alerted when CVE-2026-112060 or the next vulnerability affects your stack