tcpflow through 1.6.1 contains an out-of-bounds read vulnerability that allows unauthenticated attackers to read process memory by sending packets with forged IP payload lengths. Attackers can inject crafted IPv4 or IPv6 TCP packets into captured traffic or pcap files to leak adjacent memory into reconstructed flow files or crash tcpflow.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 6.3 · simsongNVD modified 2026-10-30 13:18
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://github.com/simsong/tcpflow/issues/279 issue-tracking
- https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L781 technical-description
- https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L747 technical-description
- https://hackmd.io/@haindpwn/tcpflow-ip-payload-length-oob-read third-party-advisory
- https://github.com/simsong/tcpflow product
- https://www.vulncheck.com/advisories/tcpflow-through-1.6.1-out-of-bounds-read-via-tcp-demultiplexer-payload-length third-party-advisory