CVE-2020-14937

Name: CVE-2020-14937
Creator: NVD / NIST
Published: 2020-08-18T16:15:13.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2020-14937 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Contiki-Ng	Contiki-Ng	>= 4.4, <= 4.5

References

https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharingThird Party Advisory
https://github.com/contiki-ng/contiki-ng/issues/1354Exploit, Third Party Advisory
https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharingThird Party Advisory
https://github.com/contiki-ng/contiki-ng/issues/1354Exploit, Third Party Advisory

Timeline

Published: Aug 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14937?

How severe is CVE-2020-14937?

CVE-2020-14937 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14937?

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-2020-14937?

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

Scan your code now

Source: NVD / NIST