Vulnerability DatabaseCVE-2026-4892
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CVE-2026-4892
Published:May 11, 2026
Updated:May 16, 2026
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.
Affected Packages
https://github.com/imp/dnsmasq.git (GITHUB):
Affected version(s) >=v2.0 <v2.92rel2
Fix Suggestion:
Update to version v2.92rel2
Related Resources (7)
https://github.com/NixOS/nixpkgs/pull/519093
https://thekelleys.org.uk/dnsmasq/
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
https://github.com/NixOS/nixpkgs/pull/519082
https://github.com/pi-hole/FTL/releases/tag/v6.6.2
https://www.kb.cert.org/vuls/id/471747
https://thekelleys.org.uk/dnsmasq/CVE/
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CVSS v4
Base Score:
8.6
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
EPSS
Base Score:
0.01