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EUVD-2026-375515

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:39

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:39:54.984679+00:00",
  "id": "EUVD-2026-375515"
}

CVE-2026-55654 (GCVE-0-2026-55654)

Vulnerability from cvelistv5 – Published: 2026-06-23 03:37 – Updated: 2026-09-24 22:41

Title

Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination

Summary

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.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-23 12:11 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

redhat redhat root Scorecard

References

7 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:36759	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47756	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47757	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:54387	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:58981	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-55654	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2462493	issue-trackingx_refsource_REDHAT

Impacted products

11 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:9.9p1-25.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:9.9p1-9.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Hardened Images	Unaffected: 10.3p1-6.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1786435483 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1786533529 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1787135742 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1787241260 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2026-06-22 23:18

Credits

This issue was discovered by In partnership with Red Hat (Aisle.com).

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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EUVD-2026-375515

CVE-2026-55654 (GCVE-0-2026-55654)

Tags

Sightings

Nomenclature

Related by attack behaviour