CVE-2026-125400

Ettercap through 0.8.4.1 Use-After-Free via PCRE2 Filter Substitution

Published Nov 9, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ettercap
Ettercap ettercap
Vendors & Products Ettercap
Ettercap ettercap
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 10, 2026, 4:34 PM
Reserved
Nov 9, 2026, 10:03 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 12:17 AM
Modified
Nov 12, 2026, 9:07 PM