Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Digitalcorpora | Tcpflow | <= 1.6.1 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6ExploitMitigationVendor Advisory
- https://lists.debian.org/debian-lts-announce/2026/02/msg00014.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2026-25061?
CVE-2026-25061 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 el...
How severe is CVE-2026-25061?
CVE-2026-25061 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25061?
Check the references section above for vendor advisories and patch information. Affected products include: Digitalcorpora Tcpflow, Debian Debian Linux.