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Vulnerability record · CVE-2026-25061 · published 29 January 2026

CVE-2026-25061: Digitalcorpora tcpflow out-of-bounds write vulnerability

DDigitalcorpora · Tcpflow

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.

5.5 CVSS 4.0 Medium EPSS 0.59% · top 54.1% CWE-787 · Out-of-bounds write
5.5CVSS 4.0 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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: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:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6 ExploitMitigationVendor Advisory
https://lists.debian.org/debian-lts-announce/2026/02/msg00014.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-25061), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.