Ettercap through 0.8.4.1 contains a use-after-free vulnerability in func_pcre() in src/ec_filter.c that reads the PCRE2 ovector after freeing match data. Network-adjacent attackers can send packets matching a loaded pcre_regex() substitution filter to corrupt memory and potentially execute code as root.

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 High

Vulnerable System Availability Impact High

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 High

Availability Impact High

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.

Affected Vendors & Products

Vendors Products
Ettercap-project Subscribe
Ettercap Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_filter.c#L593-L625 cve-icon
https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98 cve-icon
https://github.com/Ettercap/ettercap/pull/1330 cve-icon
https://github.com/Ettercap/ettercap/security/advisories/GHSA-f3j5-rhhr-85j5 cve-icon
https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-use-after-free-via-pcre2-filter-substitution cve-icon
History

Mon, 09 Nov 2026 23:45:00 +0000

Type Values Removed Values Added
Description Ettercap through 0.8.4.1 contains a use-after-free vulnerability in func_pcre() in src/ec_filter.c that reads the PCRE2 ovector after freeing match data. Network-adjacent attackers can send packets matching a loaded pcre_regex() substitution filter to corrupt memory and potentially execute code as root.
Title Ettercap through 0.8.4.1 Use-After-Free via PCRE2 Filter Substitution
First Time appeared Ettercap-project
Ettercap-project ettercap
Weaknesses CWE-416
CPEs cpe:2.3:a:ettercap-project:ettercap:*:*:*:*:*:*:*:*
Vendors & Products Ettercap-project
Ettercap-project ettercap
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T23:28:02.839Z

Reserved: 2026-11-09T22:03:15.134Z

Link: CVE-2026-125400

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses