An issue was discovered in the IPv6 stack in Contiki through 3.0.
Priority MEDIUM 61CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.20883 97th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:contiki-os:contiki-os:*:*:*:*:*:*:*:* | up to 3.0 | Vulnerable | Contiki-os |
- cpe:2.3:o:contiki-os:contiki-os:*:*:*:*:*:*:*:* Versions up to 3.0 Vulnerable ·Contiki-os
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-25111
- 2026-10-03 Alias added: GHSA-5h56-5v9q-6vx2
References
More Contiki-os vulnerabilities
- TI-2020-15360 An issue was discovered in the IPv6 stack in Contiki through 3.0. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-25111 · CVE Program
- CVE-2020-25111 · NVD
- FIRST EPSS
- GHSA-5h56-5v9q-6vx2 · GitHub Advisory Database · CC BY 4.0
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