AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-21282

HIGH · CVSS 8.6 EPSS 0.99% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-18 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.6. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-21282
Severity
HIGH
CVSS
8.6
EPSS
0.99%

Original NVD Description

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In versions prior to 4.5, buffer overflow can be triggered by an input packet when using either of Contiki-NG's two RPL implementations in source-routing mode. The problem has been patched in Contiki-NG 4.5. Users can apply the patch for this vulnerability out-of-band as a workaround.

Related CVEs

Other vulnerabilities affecting the same vendor(s)