CVE-2026-93011
Medium · 5.3CVSS
5.3
EPSS
0.6%
Published
Oct 29, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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