CVE-2026-25061: 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…

PriorityP346high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.52%

40.6th percentile

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

5 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	tcpflow	< tcpflow 1.5.2+repack1-1+deb11u1 (bullseye)	tcpflow 1.5.2+repack1-1+deb11u1 (bullseye)
digitalcorpora	tcpflow	<= 1.6.1	—
digitalcorpora	tcpflow	>= 0 < 1.5.2+repack1-1+deb11u1	1.5.2+repack1-1+deb11u1
simsong	tcpflow	<= 1.61	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvdv4.05.5MEDIUMCVSS: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

osv5.5MEDIUM

vendor_debian5.5MEDIUM

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