Security readout for executives and security teams
CVE-2021-36754 is a denial-of-service issue in PowerDNS Authoritative Server 4.5.0. A specific DNS query using QTYPE 65535 can trigger an out-of-bounds exception and crash the process. The cited sources support service disruption risk, not data theft or code execution. Exposure is likely limited to organizations running PowerDNS Authoritative Server 4.5.0, especially where authoritative DNS service accepts queries from untrusted networks. The bundled affected-product metadata is incomplete, but the title and PowerDNS advisory identify the product and fixed version. Address promptly if PowerDNS Authoritative Server 4.5.0 is deployed on business-critical DNS. A crash of authoritative DNS can disrupt domain resolution and dependent services. If not running that exact version, urgency is lower but should be documented. Mitigation focus: Upgrade PowerDNS Authoritative Server 4.5.0 to 4.5.1 or later.; Review the PowerDNS advisory for any environment-specific guidance.; Prioritize internet-facing authoritative DNS servers first..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2021-36754 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://doc.powerdns.com/authoritative/security-advisories/index.htmlCVE reference · x_refsource_MISC
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.htmlCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
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