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Vulnerabilities & PatchesEmerging1 sourceAug 13, 2026 · 05:00via Zero Day Initiative (Published)

ZDI-26-584: dnsmasq DNSSEC NSEC/NSEC3 Type Bitmap Processing Infinite Loop Denial-of-Service Vulnerability

Brief

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of dnsmasq. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.

  • The following CVEs are assigned: CVE-2026-4890.
Read more on Zero Day Initiative (Published)→
Vulnerabilities & PatchesCVE-2026-4890