Out-of-bounds Read in Ethernut Nut\/os
CVE-2020-25110
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.537 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.537 · newest: 0.537 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.kb.cert.org/vuls/id/815128 (US Government Resource, Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-20-343-01 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25110?
- CVE-2020-25110 is a critical-severity vulnerability in Ethernut Nut\/os, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2020-12-11.
- How severe is CVE-2020-25110?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-25110 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.