CVE-2026-125404 json
Ettercap through 0.8.4.1 Stack Buffer Overflow via WPA CCMP Decryption
published 6d ago modified yesterday also EUVD-2026-120567 , GHSA-j37f-7jx3-rf8j
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository Ettercap/ettercap. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 2%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- github.com/Ettercap/ettercap@1d8badb commit
- github.com/Ettercap/ettercap#1330 pull request
Is CVE-2026-125404 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.7 | CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 7.7 | CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Ettercap ettercap
Classification
- Weakness
-
- CWE-191 Integer Underflow (Wrap or Wraparound)
References
-
github.com
/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98
patch
-
github.com
/Ettercap/ettercap/pull/1330
issue-tracking, patch
-
github.com
/Ettercap/ettercap/security/advisories/GHSA-j37f-7jx3-rf8j
vendor-advisory, advisory
-
github.com
/Ettercap/ettercap/blob/v0.8.4.1/src/ec_encryption_ccmp.c#L190-L203
technical-description
-
vulncheck.com
/advisories/ettercap-through-0.8.4.1-stack-buffer-overflow-via-wpa-ccmp-decryption
third-party-advisory
Sources
- CVE List CVE-2026-125404
- NVD CVE-2026-125404
- Maintainer advisory GHSA-j37f-7jx3-rf8j
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of Ettercap/ettercap published their own advisory on GitHub. Reviewed sources take precedence over it.