Microsoft security update for CVE-2025-26465
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26465. This page also shows what EchelonGraph holds for CVE-2025-26465, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products5
- azl3 openssh 9.8p1-3 on Azure Linux 3.0
- azl3 openssh 9.8p1-4 on Azure Linux 3.0
- cbl2 openssh 8.9p1-7 on CBL Mariner 2.0
- cbl2 openssh 8.9p1-8 on CBL Mariner 2.0
- cbl2 openssh 8.9p1-8 on CBL-Mariner 2.0
✅ Updates Microsoft lists: 2 updates
2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 9.8p1-3 |
| — | Security Update | 8.9p1-7 |
🧭 EchelonGraph on CVE-2025-26465
- EchelonGraph score
- 6.8 MEDIUM
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.
Published by Red Hat, Inc., the CVE Numbering Authority that assigned CVE-2025-26465, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).