High severity7.5NVD Advisory· Published Jul 30, 2021· Updated Jun 17, 2026
CVE-2021-36754
CVE-2021-36754
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- PowerDNS/Authoritative Serverdescription
- Range: <4.5.1
- osv-coords7 versionspkg:deb/ubuntu/pdns?arch=src?distro=esm-apps/bionicpkg:deb/ubuntu/pdns?arch=src?distro=esm-apps/xenialpkg:deb/ubuntu/pdns?arch=src?distro=focalpkg:deb/ubuntu/pdns?arch=src?distro=jammypkg:deb/ubuntu/pdns?arch=src?distro=noblepkg:deb/ubuntu/pdns?arch=src?distro=oracularpkg:rpm/opensuse/pdns&distro=openSUSE%20Tumbleweed
>= 0+ 6 more
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: < 4.5.1-1.5
Patches
Vulnerability mechanics
References
3- www.openwall.com/lists/oss-security/2021/07/26/2nvdMailing ListThird Party Advisory
- doc.powerdns.com/authoritative/security-advisories/index.htmlnvdVendor Advisory
- doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.htmlnvdVendor Advisory
News mentions
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