CVE-2020-13985

Name: CVE-2020-13985
Creator: NVD / NIST
Published: 2020-12-11T22:15:12.403+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.81%

Last modified Jun 17, 2026

CVE-2020-13985 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Contiki through 3.0. A memory corruption vulnerability exists in the uIP TCP/IP stack component when handling RPL extension headers of IPv6 network packets in rpl_remove_header in net/rpl/rpl-ext-header.c.. EPSS estimates a 4.81% chance of exploitation in the next 30 days.

Description

An issue was discovered in Contiki through 3.0. A memory corruption vulnerability exists in the uIP TCP/IP stack component when handling RPL extension headers of IPv6 network packets in rpl_remove_header in net/rpl/rpl-ext-header.c.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

4.81%

90.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Contiki-Os	Contiki	<= 3.0

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource

Timeline

Published: Dec 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13985?

How severe is CVE-2020-13985?

CVE-2020-13985 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.81% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13985?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13985?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST