CVE-2026-4892

HIGH 8.8EPSS 0.8%

A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.

CVSS v3.1: 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1: 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.81% chance of exploitation in the next 30 days, 54th percentile
Published: 2026-05-11
Updated: 2026-08-25

Proof-of-concept exploits (1)

xchglabs/dnsmasq_2.92_pocs

References

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