CVE-2026-4893

5.3 MEDIUM 2% exploit odds Fix listed Disclosure

What it is

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

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 1.8% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-05-11 18:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 10:57 UTC Last updatedMost recent change to the record

Details

Published: 2026-05-11 18:16 UTC
Last modified: 2026-06-17 10:57 UTC
Exploit probability: 1.8% · EPSS, next 30 days
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 5.3

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Raw vector

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

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Fix and advisories

References

NVD record · CVE.org record