cveboard RSS feed

CVE-2021-25220

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2021
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

DNS forwarders - cache poisoning vulnerability

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

BIND

Vendor
ISC
Product
BIND
Platforms
Unknown
Default status
Unknown
BIND · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
Open Source Branch 9.11 9.11.0 through versions before 9.11.37affectedUnavailableUnavailableUnavailableNone listed
Development Branch 9.17 BIND 9.17 all versionaffectedUnavailableUnavailableUnavailableNone listed
Open Source Branch 9.12-16 9.12.0 through versions before 9.16.27affectedUnavailableUnavailableUnavailableNone listed
Open Source Branch 9.18 9.18.0affectedUnavailableUnavailableUnavailableNone listed
Supported Preview Branch 9.11-S 9.11.0-S through versions before 9.11.37-SaffectedUnavailableUnavailableUnavailableNone listed
Supported Preview Branch 9.16-S 9.16.0-S through versions before 9.16.27-SaffectedUnavailableUnavailableUnavailableNone listed