Catalogo CVE

CVE-2026-55654

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing

[Catalogo CVE]

Gravità: Low · CVSS 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Jun 22, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.65% · Oct 22, 2026

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.

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	openssh	sid	`1:10.6p1-1`	fixed
Debian	openssh	forky	`1:10.6p1-1`	fixed
Debian	openssh	trixie	`1:10.0p1-7+deb13u4`	vulnerable
Debian	openssh	trixie-security	`1:10.0p1-7+deb13u2`	vulnerable
Debian	openssh	bookworm	`1:9.2p1-2+deb12u10`	not affected
Debian	openssh	bookworm-security	`1:9.2p1-2+deb12u9`	not affected
Cpe	openssh	Not reported	Not reported	vulnerable
Cpe	openssh	Not reported	Not reported	unknown
Cpe	hardened_images	Not reported	Not reported	unknown
Cpe	enterprise_linux	Not reported	Not reported	unknown
Cpe	openssh	Not reported	Not reported	unknown
Cpe	hardened_images	Not reported	Not reported	unknown
Cpe	enterprise_linux	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	openssh	source	sid	`1:10.4p1-5`	not yet assigned	Not reported	Not reported
Debian	openssh	source	forky	`1:10.4p1-5`	not yet assigned	Not reported	Not reported
Debian	openssh	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	openssh	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

Notes

[trixie] openssh: Minor issue

OpenFactory catalog packages

[Debian 13 (Trixie)]

[openssh-client]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · amd64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · arm64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · amd64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · arm64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · amd64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · arm64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
[openssh-client-gssapi]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
[openssh-server]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · amd64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · arm64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · amd64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · arm64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · amd64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · arm64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
[openssh-server-gssapi]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
[openssh-sftp-server]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · amd64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · arm64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · amd64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · arm64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · amd64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · arm64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
[openssh-tests]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · amd64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · arm64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · amd64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · arm64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · amd64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · arm64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
[ssh]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · all · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · all · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · all · trixie-security
  Interessata
  nvd · openssh · debian · 13
[ssh-askpass-gnome]Interessata
Pacchetto sorgente: [openssh]
Dettagli (6)
- 1:10.0p1-7+deb13u4 · amd64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u4 · arm64 · trixie
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · amd64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.3p1-1~bpo13+1 · arm64 · trixie-backports
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · amd64 · trixie-security
  Interessata
  nvd · openssh · debian · 13
- 1:10.0p1-7+deb13u2 · arm64 · trixie-security
  Interessata
  nvd · openssh · debian · 13

[Debian 12 (Bookworm)]

[openssh-client]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · amd64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · arm64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · amd64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · arm64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · amd64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · arm64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · amd64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · arm64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
[openssh-client-gssapi]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (2)
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
[openssh-server]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · amd64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · arm64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · amd64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · arm64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · amd64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · arm64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · amd64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · arm64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
[openssh-server-gssapi]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (2)
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
[openssh-sftp-server]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · amd64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · arm64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · amd64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · arm64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · amd64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · arm64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · amd64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · arm64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
[openssh-tests]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · amd64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · arm64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · amd64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · arm64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · amd64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · arm64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · amd64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · arm64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
[ssh]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · all · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · all · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · all · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · all · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · all · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · all · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · all · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
[ssh-askpass-gnome]Non interessata
Pacchetto sorgente: [openssh]
Dettagli (8)
- 1:9.2p1-2+deb12u10 · amd64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u10 · arm64 · bookworm
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · amd64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:10.0p1-7~bpo12+1 · arm64 · bookworm-backports
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · amd64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u9 · arm64 · bookworm-security
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · amd64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm
- 1:9.2p1-2+deb12u7 · arm64 · bookworm-updates
  Non interessata
  nvd · openssh · debian · bookworm

Osservato: Oct 23, 2026, 9:45:33 PM UTC

Riferimenti

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