CVE-2026-55654

lowpriority · track · 0EPSS 0.007 · 51 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.65% (51st) EPSS

CVSS 3.7 · low

Is it mine?

18 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

3.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · secalert@redhat.com USexploitability 2.2 · impact 1.4

v3.13.4lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125US

affected products (18)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
IBM Security Verify Accessall versionscert_bundDEcpe:/a:ibm:security_verify_access:-
Open Source OpenSSH 10.2p1-10.1.hum1all versionscert_bundDEcpe:/a:openbsd:openssh:10.2p1-10.1.hum1
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Red Hat Enterprise Linux 10< 0:9.9p1-25.el10_2enisa_euvdEU
Red Hat Red Hat Enterprise Linux 9< 0:9.9p1-9.el9_8enisa_euvdEU
Red Hat Red Hat Hardened Images< 10.3p1-6.hum1enisa_euvdEU
Red Hat Red Hat Update Infrastructure 5< 1786435483enisa_euvdEU
Red Hat Red Hat Update Infrastructure 5< 1786533529enisa_euvdEU
openbsd opensshall versionsnvdUScpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
redhat enterprise linux= 10.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 6.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 8.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 9.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat hardened imagesall versionsnvdUScpe:2.3:a:redhat:hardened_images:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2039OpenSSH: Mehrere SchwachstellenDeutsch2026-06-22csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-06-23modified 2026-09-01

references (15)

External citations — patches, advisories, analysis.

scry

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