CVE-2016-2120
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that…
Does this matter?
Lower severity and a low EPSS score (2.00%). Track it; it rarely justifies an emergency change on its own.
Description
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.00% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- powerdns/authoritative · debian/debian linux
- Source
- secalert@redhat.com
EPSS 2.0% since 26 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-2016-2120Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3764Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3764Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.