Resource exhaustion in PowerDNS.COM B.V. products - CVE-2026-52682
Published: August 6, 2026
Vulnerability identifier: #VU141167
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-52682
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper control for consumption of internal resources. A remote attacker can send a crafted DNS packet to the server, cause increased memory and CPU consumption and perform a denial of service attack.
Affected software
dnsdist
PowerDNS Authoritative
PowerDNS Recursor
PowerDNS Authoritative
PowerDNS Recursor
How to mitigate CVE-2026-52682
Install updates from vendor's website.
dnsdist - addressed in versions 1.9.16, 2.0.8, 2.1.1
PowerDNS Authoritative - addressed in versions 4.9.17, 5.0.7, 5.1.4
PowerDNS Recursor - addressed in versions 5.2.13, 5.3.10, 5.4.5
PowerDNS Authoritative - addressed in versions 4.9.17, 5.0.7, 5.1.4
PowerDNS Recursor - addressed in versions 5.2.13, 5.3.10, 5.4.5