4.8Medium
CVE-2026-119600tcpflow < 1.7.0 Out-of-Bounds Read via TCP Demultiplexer Payload Length
Description
tcpflow before 1.7.0 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.
Weakness (CWE):
CWE-130
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
- 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
- VulnCheck Advisory: tcpflow through 1.6.1 Out-of-Bounds Read via TCP Demultiplexer Payload Length third-party-advisory
- Fixed Release Tag release-notespatch
- Pull Request issue-trackingpatch