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CVE-2026-33609

LDAP DN injection

Published: Apr 22, 2026Updated: Apr 24, 2026 Sources: CVE List NVDCWE-90
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 84.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-90

Affected Products

AuthoritativePowerDNS
On-premNetwork Device
Networking Infrastructure / dns-dhcp-ntp
authoritativepowerdns
On-premNetwork Device
Networking Infrastructure / dns-dhcp-ntp
powerdnsoss-projectDKNetworking Infrastructureaka powerdns recursor, powerdns authoritative, dnsdist

Exploitability

Official Patch Available

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html
docs.powerdns.com

Timeline

Published
Apr 22, 2026
Last Updated
Apr 24, 2026

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