CVE-2025-62291HighMicrosoft CVSS 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Microsoft security update for CVE-2025-62291

Published
June 2, 2026
Last Modified
—

🔗 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-2025-62291. This page also shows what EchelonGraph holds for CVE-2025-62291, 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 products4

  • azl3 strongswan 5.9.14-7 on Azure Linux 3.0
  • azl3 strongswan 5.9.14-8 on Azure Linux 3.0
  • cbl2 strongswan 5.9.10-3 on CBL Mariner 2.0
  • cbl2 strongswan 5.9.10-4 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 articleUpdateFixed build
—Security Update5.9.14-8
—Security Update5.9.10-4

🧭 EchelonGraph on CVE-2025-62291

EchelonGraph score
8.1 HIGH
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

In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.

Published by MITRE Corporation, the CVE Numbering Authority that assigned CVE-2025-62291, 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).

🔗 References (2)