CVE-2026-33602
Off-by-one access when processing crafted UDP responses
- State
- Published
- Severity
- 6.5 Medium
- Published
- Apr 22, 2026
- Updated
- Apr 22, 2026
- Reserved
- Mar 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H | OX |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
DNSdistPowerDNS |
|
References
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