Search threats, CVEs… ⌘K
← Back to CVE intelligence
CVE intelligence

CVE-2026-39828

Vulnerability intelligence

Published May 22, 2026Sources checked Nov 11, 2026
6.3MEDIUMCVSS out of 10
What this means

Review the available evidence

CVE-2026-39828 and is rated Medium severity with a CVSS score of 6.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Nov 4, 2026
Vendor remediation details

CBL-Mariner Releases

Vendor-listed releases

  • 1.12.15-8
  • 1.7.1-5
  • 1.9.5-14
  • 1.31.0-23
  • 8.7.11-7
  • 2.62.0-17
CISA KEVNot listedBased on the latest collected catalog
EPSS0.4%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview

What is CVE-2026-39828?

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

Source: NVD