CVE-2018-14644
A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation.
Does this matter?
Lower severity and a low EPSS score (4.84%). Track it; it rarely justifies an emergency change on its own.
Description
An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.84% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- powerdns/recursor
- Source
- secalert@redhat.com
EPSS 4.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue Tracking, Third Party Advisory
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.htmlVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue Tracking, Third Party Advisory
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.