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CVE-2026-125400

8.8, high

ettercap Use-After-Free Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.8, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
10 Nov 2026today

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.

Details

Vendor
Ettercap
Product
ettercap
Weakness
CWE-416 (opens in a new tab)
Status
Received
Updated
10 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References 5

Patches and fixes 2

Advisories 1

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Ettercap CVEs

Every Ettercap CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-125401 ettercap Heap-based Buffer Overflow Vulnerability 8.1, high
  • CVE-2026-125402 ettercap Out-of-Bounds Read Vulnerability 8.1, high
  • CVE-2026-125403 ettercap Out-of-Bounds Read Vulnerability 8.1, high
  • CVE-2026-125404 ettercap Integer Underflow Vulnerability 7.5, high
  • CVE-2026-125405 ettercap Out-of-Bounds Read Vulnerability 8.1, high
  • CVE-2026-125406 Ettercap through 0.8.4.1 contains a stack buffer underwrite vulnerability in the telnet dissector in src/dissectors/ec_telnet.c that… 8.8, high

Beyond this page

Is CVE-2026-125400 in your network?

This page tells you how dangerous CVE-2026-125400 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-125400 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 10 Nov 2026, not the live upstream state.