CVE-2026-4893

Published: May 11, 2026Updated: May 12, 2026 Sources: CVE List NVD

5.3MEDIUM

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:NIntegrity

None

A:NAvailability

None

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Affected Products

dnsmasq

oss-project

dnsmasqOn-prem

Networking Infrastructure / dns-dhcp-ntp

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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References

https://www.kb.cert.org/vuls/id/471747

kb.cert.org

https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html

lists.thekelleys.org.uk

https://thekelleys.org.uk/dnsmasq/CVE/

thekelleys.org.uk

and 3 more references View all →

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