CVE-2026-119600 tcpflow < 1.7.0 Out-of-Bounds Read via TCP Demultiplexer Payload Length

Q: What is CVE-2026-119600?

CVE-2026-119600 is a medium-severity vulnerability in simsong tcpflow, published on 30 Oct 2026.

Q: Is CVE-2026-119600 being exploited?

There is no known exploitation of CVE-2026-119600 in the wild and no public exploit code.

Q: How do I fix CVE-2026-119600?

No fix has been published for CVE-2026-119600 yet. Limit exposure of the affected software until one is available.

Medium 6.3 Published 30 Oct 2026 Updated 9 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-119600?

CVE-2026-119600 is a medium-severity vulnerability in simsong tcpflow, published on 30 Oct 2026.

Official 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-130

Which versions are affected by CVE-2026-119600?

How do I fix CVE-2026-119600?

No fix has been published for CVE-2026-119600 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-119600 being exploited?