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No exploitation reportedFix available

CVE-2026-25061

No exploitation reported by the sources we read.

  • Published2026-01-29
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-01-2922:15CVE publishedNVD

Versions per branch

NVD
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published
Digitalcorpora tcpflow
BranchAffectedFixed in
1.6≤ 1.6.1no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • simsong tcpflow
    Affected
    • = <= 1.61no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-01-29

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tcpflowUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:26.10all versions · no fixed version listed
  • tcpflowUbuntu:26.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:25.10all versions · no fixed version listed
  • tcpflowUbuntu:24.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:22.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:20.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:18.04:LTSall versions · no fixed version listed

6 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-25061 Red Hat Product Security

    tcpflow: tcpflow TIM Element OOB Write

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-01-30
  • CNACVSS 4.05.5known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-787known since 2026-10-23
  • FIRST EPSSEPSS score0.6 %2026-11-09
  • OSVaffected packages—

Identifiers

  • EUVD-2026-4944same flawENISA EUVD · LicenseRef-ENISA-legal-notice
  • DLA-4478-1advisory covering several CVEsDebian · LicenseRef-unstated
  • MGASA-2026-0113advisory covering several CVEsMageia · LicenseRef-unstated

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0 vector
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
Published
2026-01-29
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is 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 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.

Is CVE-2026-25061 actively exploited?

Active exploitation of CVE-2026-25061 has not been confirmed. Its EPSS score was 0.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25061?

CVE-2026-25061 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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