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Early warnings
SZB-dec6cd0ebc

EUVD-2026-113937 reports out-of-bounds read in tcpflow through 1.6.1

Status
Unverified: only social posts report this so far
Kind
Vulnerability
Vendor
simsong
Product
tcpflow
First seen

Summary

The EUVD listing, citing a CVSS v3.1 score of 6.3, says tcpflow through 1.6.1 has an out-of-bounds read that lets unauthenticated attackers read process memory. The attack uses crafted IPv4 or IPv6 TCP packets sent into captured traffic.

If you use simsong

Check for a tcpflow release later than 1.6.1

Upgrade tcpflow once a fixed version is available

Avoid processing untrusted captured traffic until patched

What the sources say 1

· Mastodon: “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.” Source