CVE-2026-125404 Ettercap through 0.8.4.1 Stack Buffer Overflow via WPA CCMP Decryption
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-125404?
CVE-2026-125404 is a high-severity vulnerability in ettercap, published on 9 Nov 2026.
Official description
Ettercap through 0.8.4.1 contains an integer underflow in ccmp_decrypt() in src/ec_encryption_ccmp.c that subtracts the 8-byte CCMP trailer without checking minimum length. Attackers on a network whose WPA key is loaded can send a short crafted CCMP frame to overflow a stack buffer in the Ettercap process, which normally runs as root.
Weakness: CWE-191
Which versions are affected by CVE-2026-125404?
How do I fix CVE-2026-125404?
No fix has been published for CVE-2026-125404 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-125404 being exploited?
There is no known exploitation of CVE-2026-125404 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-125404, GHSA-5p5x-8wq5-mrjm, GHSA-j37f-7jx3-rf8j, UBUNTU-CVE-2026-125404.