CVE-2026-4891

Name: CVE-2026-4891
Creator: NVD / NIST
Published: 2026-05-11T18:16:41.38+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 4.46%

Last modified Jun 17, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

4.46%

90.2th percentile

Probability of exploitation in the next 30 days. Learn more

References

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

Timeline

Published: May 11, 2026
Last Modified: Jun 17, 2026
Status: Awaiting Analysis

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Source: NVD / NIST