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Δ / VULNERABILITY RECORD

CVE-2025-40777.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Sep 03, 2025

Disclosure summary

A possible assertion failure when 'stale-answer-client-timeout' is set to '0'

Source-reported weakness categories

CWE-617

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2025-Jul

Open original source · Updated Sep 03, 2025

A possible assertion failure when 'stale-answer-client-timeout' is set to '0'

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7.5

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 bind 9.20.11-1 on Azure Linux 3.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 9.20.15-1 · product IDs 20336-17084
  • Vendor guidance · product IDs 20336-17084

Original records & references

PUBLISHED 2025-09-03T23:14:11-04:00
MODIFIED 2025-09-03T23:14:11-04:00
INGESTED 2026-10-08T12:45:47-04:00