CVE-2021-36754
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 64.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 64.86% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- powerdns/authoritative server
- Source
- cve@mitre.org
EPSS 64.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2021/07/26/2Mailing List, Third Party Advisory
- https://doc.powerdns.com/authoritative/security-advisories/index.htmlVendor Advisory
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/07/26/2Mailing List, Third Party Advisory
- https://doc.powerdns.com/authoritative/security-advisories/index.htmlVendor Advisory
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.