Out-of-bounds Write Affecting tcpflow package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.54% (43rd percentile)

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  • Snyk IDSNYK-DEBIAN13-TCPFLOW-15160372
  • published31 Jan 2026
  • disclosed29 Jan 2026

Introduced: 29 Jan 2026

CVE-2026-25061  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 tcpflow.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tcpflow package and not the tcpflow package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.

CVSS Base Scores

version 3.1