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CVE-2026-4892

CVE-2026-4892

Published: May 11, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-122
8.4HIGH
NVD MITRE
EPSS Score
0.8%
Top 46.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-122

Affected Products

dnsmasq
oss-project
dnsmasqOn-prem
Networking Infrastructure / dns-dhcp-ntp

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
lists.thekelleys.org.uk
https://www.kb.cert.org/vuls/id/471747
kb.cert.org
https://thekelleys.org.uk/dnsmasq/CVE/
thekelleys.org.uk
and 11 more references View all →
News mentions
1

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