CVE-2026-4891

MEDIUM 5.3

CVE-2026-4891

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.

Vendor	dnsmasq
Product	dnsmasq
Published	May 11, 2026
Last Updated	May 11, 2026

Stay Ahead of the Next One

Get instant alerts for dnsmasq dnsmasq

Be the first to know when new medium vulnerabilities affecting dnsmasq dnsmasq are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

dnsmasq / dnsmasq

2.92rel2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

lists.thekelleys.org.uk: https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html kb.cert.org: https://www.kb.cert.org/vuls/id/471747 thekelleys.org.uk: https://thekelleys.org.uk/dnsmasq/CVE/ github.com: https://github.com/NixOS/nixpkgs/pull/519082 github.com: https://github.com/NixOS/nixpkgs/pull/519093 github.com: https://github.com/pi-hole/FTL/releases/tag/v6.6.2