CVE catalog

CVE-2025-14821

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: Jan 1, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.13% · Oct 25, 2026

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libssh	sid	`0.12.2-1`	not affected
Debian	libssh	forky	`0.12.2-1`	not affected
Debian	libssh	trixie	`0.11.5-0+deb13u1`	not affected
Debian	libssh	trixie-security	`0.11.5-0+deb13u1`	not affected
Debian	libssh	bookworm	`0.10.6-0+deb12u2`	not affected
Debian	libssh	bookworm-security	`0.10.6-0+deb12u3`	not affected
Cpe	libssh	Not reported	`0.12.0`	fixed
Cpe	hardened_images	Not reported	Not reported	unknown
Cpe	libssh	Not reported	Not reported	not affected
Cpe	libssh	Not reported	`0.12.0`	fixed
Cpe	hardened_images	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libssh	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	libssh	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	libssh	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	libssh	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Cpe	libssh	cpe	Not reported	`0.12.0`	Not reported	Not reported	Not reported
Cpe	libssh	cpe	Not reported	`0.12.0`	Not reported	NVD-CVE-2025-14821	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libssh-4]Not affected
Source package: [libssh]
Details (4)
- 0.10.6-0+deb12u2 · amd64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u2 · arm64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
[libssh-dev]Not affected
Source package: [libssh]
Details (4)
- 0.10.6-0+deb12u2 · amd64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u2 · arm64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
[libssh-doc]Not affected
Source package: [libssh]
Details (4)
- 0.10.6-0+deb12u2 · all · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u2 · all · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · all · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · all · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
[libssh-gcrypt-4]Not affected
Source package: [libssh]
Details (4)
- 0.10.6-0+deb12u2 · amd64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u2 · arm64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
[libssh-gcrypt-dev]Not affected
Source package: [libssh]
Details (4)
- 0.10.6-0+deb12u2 · amd64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u2 · arm64 · bookworm
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm
- 0.10.6-0+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libssh · debian · bookworm

Observed: Oct 27, 2026, 6:39:10 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]