CVE-2026-4893

MEDIUM EPSS 83.9%

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

5.3 CVSS 3.1

Medium

Published May 11, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

Description

An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.

CVSS Details

Base Score

5.3

Exploitability

3.9

Impact

1.4

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality Low

Integrity None

Availability None

Threat Intelligence

EPSS Exploit Probability

83.9% 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.