CVE-2026-129431

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

Published Nov 14, 2026 CVSS 4.0 · 7.1 High EPSS n/a KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Ettercap

ettercap

unaffected

Version	Status	Constraints
`0`	affected	≤ 0.8.5.1

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/Ettercap/ettercap
https://github.com/Ettercap/ettercap/blob/v0.8.5.1/src/dissectors/ec_socks.c#L108-L124
https://github.com/Ettercap/ettercap/pull/1340
https://www.vulncheck.com/advisories/ettercap-through-0.8.5.1-heap-out-of-bounds-read-via-socks5-dissector

History

Nov 14, 2026 12:45 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Ettercap through 0.8.5.1 Heap Out-of-Bounds Read via SOCKS5 Dissector
First Time appeared		Ettercap-project Ettercap-project ettercap
Weaknesses		CWE-125
CPEs		cpe:2.3:a:ettercap-project:ettercap::::::::
Vendors & Products		Ettercap-project Ettercap-project ettercap
References		https://github.com/Ettercap/ettercap https://github.com/Ettercap/ettercap/blob/v0.8.5.1/src/dissectors/ec_socks.c#L108-L124 https://github.com/Ettercap/ettercap/pull/1340 https://www.vulncheck.com/advisories/ettercap-through-0.8.5.1-heap-out-of-bounds-read-via-socks5-dissector
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}` cvssV4_0 `{'score': 7.1, 'vector': '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'}`