CVE-2026-4893

CVE-2026-4893

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

Affected

dnsmasq

CVSS v3.1 CNA

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

EPSS

0.58% chance of exploitation in the next 30 days, 46th percentile

Published

2026-05-11

Updated

2026-05-20

Proof-of-concept exploits (1)

• lottiedeyan/CVE20264893poc0★ · 2026-05-27

Security advisories

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

References

• CVE Record
• NVD entry

Related

• CVE-2026-53075