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CVE-2026-129431

Ettercap through 0.8.5.1 Heap Out-of-Bounds Read via SOCKS5 Dissector

  • High 7.1

Description

Ettercap through 0.8.5.1 contains a heap out-of-bounds read vulnerability in dissector_socks() in src/dissectors/ec_socks.c that allows network-adjacent attackers to read heap memory via unchecked SOCKS5 username/password lengths. Attackers can send a crafted SOCKS5 authentication packet observed by Ettercap to read up to 255 bytes past the heap buffer, disclosing memory printed and logged as captured credentials.

Key facts

Published
14 Nov 2026
Last changed
14 Nov 2026
Assigned by
VulnCheck
EPSS
0.234% likely to be exploited in the next 30 days, higher than 14.425% of CVEs (scores for 15 Nov 2026)

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.1CVSS 4.0, Highfrom the CNA (VulnCheck)CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • 6.5CVSS 3.1, Mediumfrom the CNA (VulnCheck)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
Ettercapettercap
  • Default status: unaffected
  • 0 up to and including 0.8.5.1 (affected)

Timeline

  1. 14 Nov 2026 Published

Weakness

References