CVE-2021-36754
HIGH
7.5
CVSS Score
Published: July 27, 2021 at 05:35 AM UTC
Updated: June 17, 2026 at 03:59 AM UTC
1 product affected across 1 vendorAuthoritative Server
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Severity
HIGH7.5
Exploit prediction
EPSS 65%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
4.5.0 ≤ v < 4.5.1
Affected range stops below 4.5.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/26/2x_refsource_MISCVendor Advisory
Source: [email protected]
https://doc.powerdns.com/authoritative/security-advisories/index.htmlx_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-119
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