SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-25110

This may lead to successful Denial-of-Service, and possibly Remote Code Execution.

CRITICAL 9.8EPSS 53.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 53.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. The length byte of a domain name in a DNS query/response is not checked, and is used for internal memory operations. This may lead to successful Denial-of-Service, and possibly Remote Code Execution.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
53.70% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
ethernut/nut\/os
Source
cve@mitre.org
EPSS trend
0%28%55%3 November 2026: 53.70%3 November 20263 November 2026

EPSS 53.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.