AZL-93132

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-93132.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-93132
Upstream
  • CVE-2026-11721
Published
2026-07-22T15:16:51Z
Modified
2026-08-28T17:46:39Z
Summary
CVE-2026-11721 affecting package bind for versions less than 9.20.26-1
Details

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For this attack to have any effect, the resolver under attack must have set synth-from-dnssec yes; (which is the default). This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

References

Affected packages

Azure Linux:3 / bind

Package

Name
bind
Purl
pkg:rpm/azure-linux/bind

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
9.20.26-1

Database specific

source 
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-93132.json"