Quick answers
- Is CVE-2026-125400 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-125400 being exploited in the wild.
- How severe is CVE-2026-125400?
- High severity, with a CVSS score of 8.8, published 10 November 2026.
- Which products and versions are affected?
- Ettercap through 0.8.4.1.
- Is there a fix for CVE-2026-125400?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-125400 attacked?
- It is attacked over the network or from the adjacent network, in a software library.
- Am I affected by CVE-2026-125400?
- Check whether you run Ettercap at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A use-after-free flaw exists in the func_pcre() function in src/ec_filter.c where the PCRE2 ovector is read after the underlying match data has been freed. Network-adjacent attackers can send packets matching a loaded pcre_regex() substitution filter to exploit this, resulting in memory corruption and potential remote code execution with root privileges. The vulnerability is present through version 0.8.4.1.
Affected products
- Ettercap Ettercap through 0.8.4.1
Timeline
- 2026-11-10: disclosed