CVE-2026-25061Public exploitNetwork attack vector

Service interruption via incorrect TIM length check

Published Jan 29, 2026 · Updated Jan 29, 2026

Out-of-bounds write in tcpflow 1.61 and earlier allows remote attackers to interrupt service via a crafted 802.11 TIM element. WifiPacket::parse_elements checks rates.length instead of tim.length before copying up to 252 bytes into the 251-byte tim.bitmap buffer. The vulnerable wifipcap code exists only on non-Windows builds and is reached when a crafted beacon is parsed from wireless capture data.

CVSS severity7.5
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in tcpflow 1.61 and earlier allows remote attackers to interrupt service via a crafted 802.11 TIM element. WifiPacket::parse_elements checks rates.length instead of tim.length before copying up to 252 bytes into the 251-byte tim.bitmap buffer. The vulnerable wifipcap code exists only on non-Windows builds and is reached when a crafted beacon is parsed from wireless capture data.

The record

CVE
CVE-2026-25061
Published
Jan 29, 2026
Updated
Jan 29, 2026
Vendor
Simson Garfinkel
Product
tcpflow
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 1.61

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Simson Garfinkel · tcpflowversion=<= 1.61

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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