CVE-2026-75029

Summary

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.

Affected Software

VendorProductVersion RangeStatus
ISCBIND 99.11.0 <= 9.18.50affected
ISCBIND 99.20.0 <= 9.20.27affected
ISCBIND 99.21.0 <= 9.21.25affected
ISCBIND 99.11.3-S1 <= 9.18.50-S1affected
ISCBIND 99.20.9-S1 <= 9.20.27-S1affected

Weaknesses

  • CWE-405: CWE-405 Asymmetric Resource Consumption (Amplification)

Workarounds

No workarounds known.

References