What’s Vulnerable › Vulnerabilities

CVE-2026-25061: tcpflow has TIM Element OOB Write in wifipcap

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-29 · updated 2026-06-17
• Weakness: CWE-787

Description

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.

Affected products

• Debian Linux: 11.0
• Digitalcorpora Tcpflow: through 1.6.1

References

• https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6
• https://lists.debian.org/debian-lts-announce/2026/02/msg00014.html

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