CVE-2020-25109
9.8
CRITICAL · CVSS 3.1 · EPSS 53.7% (pctl 99)
Patch early
EPSS 53.7% — above the 10% action threshold.
Description
An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. The number of DNS queries/responses (set in a DNS header) is not checked against the data present. This may lead to successful Denial-of-Service, and possibly Remote Code Execution.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 53.7% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-125 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-12-11 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| ethernut | nut\/os |
References
→ the Explorer · watch your stack · NVD