HIGH 7.5 Microsoft
CVE-2026-1519
Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Microsoft Security Update 2026-Mar: Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Affected Products
- cbl2 bind 9.16.50-3 on CBL Mariner 2.0
- azl3 bind 9.20.18-1 on Azure Linux 3.0
- cbl2 bind 9.16.50-3
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-1519
- https://nvd.nist.gov/vuln/detail/CVE-2026-1519
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-03-10 via Microsoft. Affected: cbl2 bind 9.16.50-3 on CBL Mariner 2.0, azl3 bind 9.20.18-1 on Azure Linux 3.0, cbl2 bind 9.16.50-3.
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