CVE-2026-33602
HIGHCVSS 8.2/10EPSS 0.73%
Last modified
CVE-2026-33602 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.. EPSS estimates a 0.73% chance of exploitation in the next 30 days.
Description
A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Dnsdist | >= 1.9.0, < 1.9.13 |
| Powerdns | Dnsdist | >= 2.0.0, < 2.0.4 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33602?
A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.
How severe is CVE-2026-33602?
CVE-2026-33602 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.
How do I fix CVE-2026-33602?
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-2026-33602?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST