CVE-2026-4892
Received Received - Intake
Heap-based Out-of-Bounds Write in dnsmasq DHCPv6

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: CERT/CC

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.
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Meta Information
Published
2026-05-11
Last Modified
2026-05-11
Generated
2026-06-21
AI Q&A
2026-05-11
EPSS Evaluated
2026-06-19
NVD
CVE-2026-4892
EUVD
EUVD-2026-29154
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
the_knot dhcpv6 *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a heap-based out-of-bounds write in the DHCPv6 implementation of dnsmasq. It allows local attackers to execute arbitrary code with root privileges by sending a specially crafted DHCPv6 packet.

Impact Analysis

An attacker exploiting this vulnerability can gain root privileges on the affected system, allowing them to execute arbitrary code. This can lead to full system compromise, unauthorized access, data theft, or disruption of services.

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