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Δ / VULNERABILITY RECORD

CVE-2026-1519.

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 Aug 06, 2026

Disclosure summary

Excessive NSEC3 iterations cause high CPU load during insecure delegation validation

Source-reported weakness categories

CWE-606

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) · 2026-Mar

Open original source · Updated Aug 06, 2026

Excessive NSEC3 iterations cause high CPU load during insecure delegation validation

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 guidecbl2 bind 9.16.50-3 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 bind 9.20.18-1 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 bind 9.16.50-3 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 9.16.50-4 · product IDs 21081-17086, 21081
  • Vendor guidance · product IDs 21081-17086, 21081
  • CBL-Mariner Releases · build 9.20.21-1 · product IDs 21082-17084
  • Vendor guidance · product IDs 21082-17084

Original records & references

PUBLISHED 2026-03-28T21:01:29-04:00
MODIFIED 2026-08-06T21:14:59-04:00
INGESTED 2026-10-08T12:45:08-04:00