High severity8.8NVD Advisory· Published Nov 10, 2026
CVE-2026-125400
CVE-2026-125400
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.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_filter.cnvd
- github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98nvd
- github.com/Ettercap/ettercap/pull/1330nvd
- github.com/Ettercap/ettercap/security/advisories/GHSA-f3j5-rhhr-85j5nvd
- www.vulncheck.com/advisories/ettercap-through-0.8.4.1-use-after-free-via-pcre2-filter-substitutionnvd
News mentions
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