DEBIAN-CVE-2026-55653
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-55653
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55653.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-55653
- Upstream
- Withdrawn
- 2026-06-25T02:01:41Z
- Published
- 2026-06-23T04:17:36Z
- Modified
- 2026-06-25T02:01:41Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
- References
Affected packages
Debian:11 / openssh
Package
- Name
- openssh
- Purl
- pkg:deb/debian/openssh?arch=source&distro=bullseye
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1:8.*
1:8.4p1-5
1:8.4p1-5+deb11u1
1:8.4p1-5+deb11u2
1:8.4p1-5+deb11u3
1:8.4p1-5+deb11u4
1:8.4p1-5+deb11u5
1:8.4p1-5+deb11u6
1:8.4p1-5+deb11u7
1:8.4p1-6
1:8.7p1-1
1:8.7p1-2
1:8.7p1-3
1:8.7p1-4
1:8.8p1-1
1:8.9p1-1
1:8.9p1-2
1:8.9p1-3
1:9.*
1:9.0p1-1
1:9.1p1-1
1:9.1p1-2
1:9.2p1-1
1:9.2p1-2
1:9.3p1-1
1:9.3p1-1+loong64
1:9.3p2-1
1:9.4p1-1
1:9.5p1-1
1:9.5p1-2
1:9.6p1-1
1:9.6p1-2
1:9.6p1-3
1:9.6p1-4
1:9.6p1-5
1:9.7p1-1
1:9.7p1-2
1:9.7p1-3
1:9.7p1-3+hurd.1
1:9.7p1-4
1:9.7p1-5
1:9.7p1-6
1:9.7p1-7
1:9.8p1-1
1:9.8p1-2
1:9.8p1-3
1:9.8p1-4
1:9.8p1-7
1:9.8p1-8
1:9.9p1-1
1:9.9p1-2
1:9.9p1-3
1:9.9p1-3+hurd.1
1:9.9p2-1
1:9.9p2-2
1:10.*
1:10.0p1-1
1:10.0p1-2
1:10.0p1-3
1:10.0p1-4
1:10.0p1-5~bpo12+2
1:10.0p1-5
1:10.0p1-6
1:10.0p1-7~bpo12+1
1:10.0p1-7
1:10.0p1-8
1:10.1p1-1
1:10.1p1-2
1:10.2p1-1
1:10.2p1-2~bpo13+1
1:10.2p1-2
1:10.2p1-3
1:10.2p1-4
1:10.2p1-5
1:10.2p1-6~bpo13+1
1:10.2p1-6
1:10.3p1-1~bpo13+1
1:10.3p1-1
1:10.3p1-2
1:10.3p1-3
1:10.3p1-4
Debian:12 / openssh
Package
- Name
- openssh
- Purl
- pkg:deb/debian/openssh?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1:9.*
1:9.2p1-2
1:9.2p1-2+deb12u1
1:9.2p1-2+deb12u2
1:9.2p1-2+deb12u3
1:9.2p1-2+deb12u4
1:9.2p1-2+deb12u5
1:9.2p1-2+deb12u6
1:9.2p1-2+deb12u7
1:9.2p1-2+deb12u8
1:9.2p1-2+deb12u9
1:9.2p1-2+deb12u10
1:9.3p1-1
1:9.3p1-1+loong64
1:9.3p2-1
1:9.4p1-1
1:9.5p1-1
1:9.5p1-2
1:9.6p1-1
1:9.6p1-2
1:9.6p1-3
1:9.6p1-4
1:9.6p1-5
1:9.7p1-1
1:9.7p1-2
1:9.7p1-3
1:9.7p1-3+hurd.1
1:9.7p1-4
1:9.7p1-5
1:9.7p1-6
1:9.7p1-7
1:9.8p1-1
1:9.8p1-2
1:9.8p1-3
1:9.8p1-4
1:9.8p1-7
1:9.8p1-8
1:9.9p1-1
1:9.9p1-2
1:9.9p1-3
1:9.9p1-3+hurd.1
1:9.9p2-1
1:9.9p2-2
1:10.*
1:10.0p1-1
1:10.0p1-2
1:10.0p1-3
1:10.0p1-4
1:10.0p1-5~bpo12+2
1:10.0p1-5
1:10.0p1-6
1:10.0p1-7~bpo12+1
1:10.0p1-7
1:10.0p1-8
1:10.1p1-1
1:10.1p1-2
1:10.2p1-1
1:10.2p1-2~bpo13+1
1:10.2p1-2
1:10.2p1-3
1:10.2p1-4
1:10.2p1-5
1:10.2p1-6~bpo13+1
1:10.2p1-6
1:10.3p1-1~bpo13+1
1:10.3p1-1
1:10.3p1-2
1:10.3p1-3
1:10.3p1-4
Debian:13 / openssh
Package
- Name
- openssh
- Purl
- pkg:deb/debian/openssh?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1:10.*
1:10.0p1-7
1:10.0p1-7+deb13u1
1:10.0p1-7+deb13u2
1:10.0p1-7+deb13u3
1:10.0p1-7+deb13u4
1:10.0p1-8
1:10.1p1-1
1:10.1p1-2
1:10.2p1-1
1:10.2p1-2~bpo13+1
1:10.2p1-2
1:10.2p1-3
1:10.2p1-4
1:10.2p1-5
1:10.2p1-6~bpo13+1
1:10.2p1-6
1:10.3p1-1~bpo13+1
1:10.3p1-1
1:10.3p1-2
1:10.3p1-3
1:10.3p1-4
Debian:14 / openssh
Package
- Name
- openssh
- Purl
- pkg:deb/debian/openssh?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected