CVE-2026-93011

A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-93011
https://bugzilla.redhat.com/show_bug.cgi?id=2536082

Configurations

No configuration.

History

29 Oct 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-29 13:17

Updated : 2026-10-30 07:16

NVD link : CVE-2026-93011

Mitre link : CVE-2026-93011

CVE.ORG link : CVE-2026-93011

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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