MEDIUM

CVE-2026-75029

2026-09-16 CVSS v3.1

CVSS

5.3

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.

Weakness (CWE)

CWE-405

EPSS Score

0.41%

Probability of exploitation in next 30 days

34.5th percentile

References

https://downloads.isc.org/isc/bind9/9.20.29 https://downloads.isc.org/isc/bind9/9.21.26 https://kb.isc.org/docs/cve-2026-75029

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

Back to CVE