CVE-2020-25111
CVE-2020-25111 is a critical-severity vulnerability in Contiki-os with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 20% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Contiki-os
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-25111?
- 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.
- How severe is CVE-2020-25111?
- CVE-2020-25111 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-25111 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-25111?
- CVE-2020-25111 affects Contiki-os. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-25111?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-25111 published?
- CVE-2020-25111 was published on 2020-12-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:contiki-os:contiki-os:*:*:*:*:*:*:*:*
More vulnerabilities in Contiki-os
- CVE-2020-25112 — Critical (CVSS 9.8): An issue was discovered in the IPv6 stack in Contiki through 3.0. There are inconsistent checks for IPv6 header…
All CVEs affecting Contiki-os →
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