ZDF
Sign inSign up

Vulnerabilities

Security fix · CVE-2026-25061

tcpflow is a TCP/IP packet demultiplexer.

Published Jan 29, 2026 · catalog updated Feb 10, 2026 · tcpflow is a TCP/IP

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-25061. EPSS is 0.57%. Act only if a listed version of tcpflow is a TCP/IP is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (tcpflow is a TCP/IP).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.57%
Remediation
Advisory link
Affected products
vendor simsong tcpflow ≤ 1.61

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 . 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 and related handlers. As of time of publication, no known patches are available.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor simsong tcpflow ≤ 1.61≤ 1.61

How to fix CVE-2026-25061

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-25061. EPSS is 0.57%. Act only if a listed version of tcpflow is a TCP/IP is installed.

Which versions are affected?

Compare what you have installed with simsong tcpflow ≤ 1.61 ≤ 1.61. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.57%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 29, 2026 · EUVD

    Detected

    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 . The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. T

  2. Feb 10, 2026 · EUVD

    Updated

    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 . The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. T

Sources

  • CVE.orgVulnerability recordCVE-2026-25061

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25061

    30-day exploitation probability 0.57%

    first.org
  • EUVDVulnerability recordEUVD-2026-4944

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 7, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 3, 2026