CVE-2026-59998

FAUCET Score

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

First published: Jul 8, 2026Last modified: Jul 8, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 10.4CPE matchmatch criteria	cpe:2.3:a:openbsd:openssh::::::::
		>= 0, < 10.4CPE match	cpe:2.3:a:openbsd:openssh::::::::

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.2

Impact Score

2.5

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.18%

Probability of exploitation in next 30 days

EPSS Percentile

7.8%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0018 is in the 1st percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

ubuntupatch availablevia ubuntu_usn

Product: openssh (resolute)Fixed in: 1:10.2p1-2ubuntu3.4

ubuntupatch availablevia ubuntu_usn

Product: openssh (jammy)Fixed in: 1:8.9p1-3ubuntu0.16

ubuntupatch availablevia ubuntu_usn

Product: openssh (noble)Fixed in: 1:9.6p1-3ubuntu13.18