CVE-2026-4892

HighCVSS 8.4/10Last modified Aug 25, 2026

Description

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.

Metrics

CVSS 3.1 8.4/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
dnsmasq	dnsmasq	< 2.92rel2
Red Hat	Red Hat Enterprise Linux 10	—
Red Hat	Red Hat Enterprise Linux 8	—
Red Hat	Red Hat Enterprise Linux 9	—
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	—
Red Hat	Red Hat OpenShift Container Platform 4.19	—
Red Hat	Red Hat Enterprise Linux 6	—
Red Hat	Red Hat Enterprise Linux 7	—

References

Timeline

Published: May 11, 2026
Last modified: Aug 25, 2026
NVD status: Awaiting Analysis

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