Security Advisory

CVE-2026-75029

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-16 14:15:12

Last updated 2026-09-16 14:15:12

Assigner isc

CVSS score 5.3

State PUBLISHED

Description

In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

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