Bug 2554786 (CVE-2026-112060)

Summary: CVE-2026-112060 rtmpdump: rtmpdump: Heap memory corruption via improper AMF3 decoding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in rtmpdump. A malicious Real-Time Messaging Protocol (RTMP) server or an attacker intercepting network communications can exploit this issue by transmitting crafted Action Message Format (AMF3) data with oversized string lengths. Because the library fails to properly handle decoding errors, this triggers out-of-bounds memory reads and writes. Consequently, an attacker can cause a Denial of Service (DoS) through application crashes or expose sensitive memory contents.
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Bug Depends On: 2569416    
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Description OSIDB Bzimport 2026-10-18 12:41:57 UTC 
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.