CVE-2026-33610
HIGHCVSS 7.5/10EPSS 0.39%
Last modified
CVE-2026-33610 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Authoritative | >= 4.9.0, < 4.9.14 |
| Powerdns | Authoritative | >= 5.0.0, < 5.0.4 |
References
- https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.htmlBroken Link, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33610?
A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.
How severe is CVE-2026-33610?
CVE-2026-33610 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.
How do I fix CVE-2026-33610?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-33610?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST