An issue was discovered in Contiki through 3.0.
Priority LOW 39CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
An issue was discovered in Contiki through 3.0. An Out-of-Bounds Read vulnerability exists in the uIP TCP/IP Stack component when calculating the checksums for IP packets in upper_layer_chksum in net/ipv4/uip.c.
Why it matters now
EPSS 0.03323 88th percentileScored 2026-11-07
Fix Partial Red Hat: 2 fixed, 3 without a fix
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 · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:* | up to 1.0 | Vulnerable | Uip Project |
| cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:* | up to 3.0 | Running on | Contiki-os |
| cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:* | up to 2.1.12 | Vulnerable | Open-iscsi Project |
| cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:* | before 4.4.1 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:* | before 4.4.1 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:* | before 2.4.7 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:* | before 2.3.0 | Vulnerable | Siemens |
- cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:* Versions up to 1.0 Vulnerable ·Uip Project
- cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:* Versions up to 3.0 Running on ·Contiki-os
- cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:* Versions up to 2.1.12 Vulnerable ·Open-iscsi Project
- cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:* Versions before 4.4.1 Vulnerable ·Siemens
- cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:* Versions before 4.4.1 Vulnerable ·Siemens
- cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:* Versions before 2.4.7 Vulnerable ·Siemens
- cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:* Versions before 2.3.0 Vulnerable ·Siemens
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | — |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | — |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-13987
- 2026-10-03 Alias added: GHSA-g438-vfc9-cq65
References
Sources
- CVE-2020-13987 · CVE Program
- CVE-2020-13987 · NVD
- FIRST EPSS
- GHSA-g438-vfc9-cq65 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-13987 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences