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8.7 High

Ettercap through 0.8.4.1 contains a use-after-free vulnerability in funcpcre() in src/ecfilter.c that reads the PCRE2 ovector after freeing…

CVE-2026-125400

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

Assessment

CVSS
8.7 (v4.0)
Severity
High
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
9 November 2026
Last updated
10 November 2026
Affected
ettercap · ettercap
Assigner
VulnCheck

CVSS vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

References

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