How severe is CVE-2021-32771?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.1 out of 10.

What type of vulnerability is CVE-2021-32771?

This is classified as CWE-120, which is a common weakness in software security.

CVE-2021-32771 - HIGH Severity | CVSS 8.1

Vulnerability Description

Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615.

Related Vulnerabilities

CVE-2017-0176

HIGH

CVSS:8.1(High)

A buffer overflow in Smart Card authentication code in gpkcsp.dll in Microsoft Windows XP through SP3 and Server 2003 through SP2 allows a remote attacker to execute arbitrary code on the target compu...

CWE-1202017

CVE-2017-12718

HIGH

CVSS:8.1(High)

A Classic Buffer Overflow issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6. A third-party component used in the pump does not verify inpu...

CWE-1202017

CVE-2017-2830

HIGH

CVSS:8.1(High)

An exploitable buffer overflow vulnerability exists in the web management interface used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.37. A specially crafted HTTP request can ...

CWE-1202017

CVE-2017-2854

HIGH

CVSS:8.1(High)

An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.43. On devices with DDNS enabled, an attacker who is a...

CWE-1202017

CVE-2017-2855

HIGH

CVSS:8.1(High)

CWE-1202017

CVE-2017-2856

HIGH

CVSS:8.1(High)

CWE-1202017