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CVE-2026-106553VulnerabilityPublished Updated

OpenSSH · In Sshd

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-106553· Low 2.2

Not known to be exploited · CVSS 2.2 Low : upgrade to 10.6 when convenient.

Data as of 6 Nov 2026, 11:23 UTC

CVSS 3.1 base score
2.2Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade OpenSSH to 10.6.

Affected software

ProductAffectedFixed in
OpenBSDOpenSSHAffected
  • <10.6
Fixed in
  • 10.6

Description

A vulnerability in sshd in OpenSSH before version 10.6 allows credentials to incorrectly persist after a failure of GSSAPIAuthentication. This issue could lead to unintended credential retention during authentication failures.

References

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