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TI-2021-14878 Aliases CVE-2021-36754GHSA-g5x7-wx2c-jqff

PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by…

Priority HIGH 69CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.

Why it matters now

EPSS 0.64857 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*4.5.0 to before 4.5.1VulnerablePowerDNS
  • cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:* Versions 4.5.0 to before 4.5.1 Vulnerable ·PowerDNS

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-36754
  2. 2026-10-03 Alias added: GHSA-g5x7-wx2c-jqff

References

Advisory 3

  • TI-2019-02881 Improper input validation in PowerDNS pdns CVSS 3.0HIGH 8.8
  • TI-2022-10348 In PowerDNS Authoritative Server before 4.4.3, 4.5.x before 4.5.4, and 4.6.x before 4.6.1… CVSS 3.1HIGH 7.5
  • TI-2016-05296 PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers… CVSS 3.0MEDIUM 6.8
  • TI-2008-03198 PowerDNS Authoritative Server before 2.9.21.1 drops malformed queries, which might make… CVSS 2.0MEDIUM 6.4
  • TI-2012-00199 common_startup.cc in PowerDNS (aka pdns) Authoritative Server before 2.9.22.5 and 3.x… CVSS 2.0MEDIUM 5.0
  • TI-2019-07524 Incorrect numeric conversion in Red Hat pdns CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences