CVE-2020-25111
This leads to Denial-of-Service and potential Remote Code Execution via a crafted ICMPv6 echo packet.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 20.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered in the IPv6 stack in Contiki through 3.0. There is an insufficient check for the IPv6 header length. This leads to Denial-of-Service and potential Remote Code Execution via a crafted ICMPv6 echo packet.
- 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
- 20.88% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- contiki-os/contiki-os
- Source
- cve@mitre.org
EPSS 20.9% 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
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.