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VulnerabilityPublished

CVE-2026-33609: PowerDNS Authoritative · LDAP Injection

Affects PowerDNS AuthoritativeSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 5.0.4 or 4.9.14 when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.0.4, 4.9.14
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Authoritative and pdns to 5.0.4 or 4.9.14.

Affected software

ProductAffectedFixed in
PowerDNSAuthoritativeAffected
  • >=5.0.0 <5.0.4
Fixed in
  • 5.0.4
PowerDNSAuthoritativeAffected
  • >=4.9.0 <4.9.14
Fixed in
  • 4.9.14
GitHubpdnspkg:github/pdnsOther threatsAffected
  • >=5.0.0 <5.0.4
  • >=4.9.0 <4.9.14
Fixed in
  • 5.0.4
  • 4.9.14

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, users should consider disabling the 8bit-dns feature if feasible or restrict access to the affected PowerDNS Authoritative instances to trusted users only.

Description

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

References

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