DEBIAN-CVE-2026-125406

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-125406
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-125406.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-125406
Upstream
Published
2026-11-10T00:17:15Z
Modified
2026-11-10T10:00:26Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Ettercap through 0.8.4.1 contains a stack buffer underwrite vulnerability in the telnet dissector in src/dissectors/ec_telnet.c that decrements the output pointer on backspace without a lower bound check. Attackers can send a telnet stream with more backspaces than preceding characters to write below the stack buffer, corrupting the stack of the Ettercap process that normally runs as root.

References

Affected packages

Debian:12 / ettercap

Package

Name
ettercap
Purl
pkg:deb/debian/ettercap?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:0.*
1:0.8.3.1-11
1:0.8.3.1-12
1:0.8.3.1-13
1:0.8.3.1-14
1:0.8.3.1-15
1:0.8.3.1-16
1:0.8.4-1
1:0.8.4-2
1:0.8.4-3
1:0.8.4-4
1:0.8.4-5
1:0.8.4.1-1
1:0.8.4.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-125406.json"

Debian:13 / ettercap

Package

Name
ettercap
Purl
pkg:deb/debian/ettercap?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:0.*
1:0.8.3.1-14
1:0.8.3.1-15
1:0.8.3.1-16
1:0.8.4-1
1:0.8.4-2
1:0.8.4-3
1:0.8.4-4
1:0.8.4-5
1:0.8.4.1-1
1:0.8.4.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-125406.json"