CVE intelligence

CVE-2026-4893

Vulnerability intelligence

Published May 11, 2026Sources checked Sep 27, 2026

5.3MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-4893 and is rated Medium severity with a CVSS score of 5.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.6%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is 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.