An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0
Published Apr 23, 2020
7.5
HIGHCVSS 3.1
EPSS 2.31%
Description
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame.
Affected products
No data.
- ≤ 4.3
- ≤ 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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.31% (0.02312) | 82.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.25% (0.02255) | 80.60th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.17% (0.00171) | 54.49th | v3 (v2023.03.01) |
| Feb 26, 2024 | 0.17% (0.00171) | 53.15th | v3 (v2023.03.01) |
| Feb 11, 2024 | 0.18% (0.00176) | 53.65th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00147) | 48.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.74% (0.05736) | 77.22th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.63% (0.03630) | 71.73th | v1 |
| Jan 6, 2022 | 3.63% (0.03630) | 71.48th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (3)
- https://github.com/contiki-ng/contiki-ng/pull/972 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 x_refsource_CONFIRMRelease NotesThird Party Advisory
- https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf x_refsource_MISCTechnical DescriptionThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/contiki-ng/contiki-ng/pull/972 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 | x_refsource_CONFIRMRelease NotesThird Party Advisory | |
| https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf | x_refsource_MISCTechnical DescriptionThird Party Advisory |
Change history (0)
No recorded changes yet.