PT-2026-39698 · Dnsmasq · Dnsmasq

Published 2026-05-11 · Updated 2026-05-11 · CVE-2026-4890

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.

Fix

Related Identifiers

CVE-2026-4890

Affected Products

Dnsmasq

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-4890 · Security Note
• https://kb.cert.org/vuls/id/471747 · Note
• https://reddit.com/r/SecOpsDaily/comments/1ta9kll/vu471747_dnsmasq_contains_several_vulnerabilities · Reddit Post
• https://github.com/NixOS/nixpkgs/pull/519093 · Note
• https://thekelleys.org.uk/dnsmasq/CVE · Note
• https://github.com/NixOS/nixpkgs/pull/519082 · Note
• https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html · Note
• https://thekelleys.org.uk/dnsmasq · Note