CVE-2026-25061
Last modified
CVE-2026-25061 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Digitalcorpora | Tcpflow | <= 1.6.1 |
| Debian | Debian Linux | 11.0 |
References
- https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6Exploit, Mitigation, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2026/02/msg00014.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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