An issue was discovered in Contiki through 3.0
Published Mar 24, 2021
7.5
HIGHCVSS 3.1
EPSS 1.31%
Description
An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL extension headers. Because the packet length and the extension header length are unchecked (with respect to the available data) at this stage, and these variables are susceptible to integer underflow, it is possible to construct an invalid extension header that will cause memory corruption issues and lead to a Denial-of-Service condition. This is related to rpl-ext-header.c.
Affected products
No data.
- ≤ 3.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.31% (0.01307) | 69.55th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.31% (0.01307) | 69.29th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.14% (0.00135) | 49.38th | v3 (v2023.03.01) |
| Dec 8, 2023 | 0.14% (0.00135) | 48.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.12% (0.00117) | 43.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.25% (0.02249) | 50.70th | v1 |
| Jan 6, 2022 | 2.25% (0.02249) | 50.20th | v1 |
| Jan 5, 2022 | 0.51% (0.00510) | 29.43th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.51% (0.00510) | 0.00th | v1 |
References (2)
- https://github.com/contiki-os/contiki/releases x_refsource_MISCRelease NotesThird Party Advisory
- https://www.kb.cert.org/vuls/id/815128 x_refsource_MISCThird Party AdvisoryUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://github.com/contiki-os/contiki/releases | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://www.kb.cert.org/vuls/id/815128 | x_refsource_MISCThird Party AdvisoryUS Government Resource |
Change history (0)
No recorded changes yet.