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NVD Vulnerability Details :

CVE-2026-59998

Analyzed

Source-cve@mitre.org

Published At-08 Jul, 2026 | 01:16

Updated At-09 Jul, 2026 | 16:55

sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	4.8	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Primary	3.1	6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
			N/A

Type: Secondary

Version: 3.1

Base score: 4.8

Base severity: MEDIUM

Vector:

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

Type: Primary

Version: 3.1

Base score: 6.5

Base severity: MEDIUM

Vector:

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

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

CPE Matches

OpenBSD

>>openssh>>Versions before 10.4(exclusive)

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-573	Secondary	cve@mitre.org

CWE ID: CWE-573

Type: Secondary

Source: cve@mitre.org

References

Hyperlink	Source	Resource
https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2	cve@mitre.org	Release Notes
https://www.openssh.org/releasenotes.html#10.4p1	cve@mitre.org	Release Notes
https://www.openwall.com/lists/oss-security/2026/07/06/5	cve@mitre.org	Mailing List Release Notes

Hyperlink: https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2

Source: cve@mitre.org

Resource:

Release Notes

Hyperlink: https://www.openssh.org/releasenotes.html#10.4p1

Source: cve@mitre.org

Resource:

Release Notes

Hyperlink: https://www.openwall.com/lists/oss-security/2026/07/06/5

Source: cve@mitre.org

Resource:

Mailing List

Release Notes

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History