CVE-2026-4890

HIGH EPSS 91.9%

Published May 11, 20261mo ago · Modified Jun 17, 20262w ago

7.5 CVSS 3.1

High

Published May 11, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

7.5

Exploitability

3.9

Impact

3.6

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

91.9% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

References 6

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
lists.thekelleys.org.uk https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
thekelleys.org.uk https://thekelleys.org.uk/dnsmasq/CVE/
kb.cert.org https://www.kb.cert.org/vuls/id/471747

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.