CVE-2021-27137 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
June 5, 2026
Last Seen
June 5, 2026

CVE-2021-27137 is a vulnerability tracked across 1 threat cluster and 2 intelligence report mentions on ThreatCluster. First observed June 5, 2026; most recent activity June 5, 2026.

Related Threat Clusters

  • C0XMO Gafgyt Variant Exploits DD-WRT Routers via CVE-2021-27137

    A new Gafgyt botnet variant named C0XMO has emerged, targeting DD-WRT routers by exploiting CVE-2021-27137, a buffer overflow vulnerability in the UPnP service. This malware employs a Python-based scanner to propagate…

    6 articles · Updated June 5, 2026

Recent Intelligence Reports

  • C0XMO Gafgyt Variant Spreads Through DD-WRT Routers — Socprime · June 5, 2026
  • New Gafgyt Variant Targets Linux Systems With Modular Spread Tactics — Gbhackers · June 5, 2026

Related Entities

Botnet Brute Force DDoS Malware CWE-120 - Classic Buffer Overflow Cwe-122 - Heap-based Buffer Overflow C0xmo Gafgyt T1053 - Scheduled Task/Job T1059.006 - Python T1110 - Brute Force T1190 - Exploit Public-Facing Application

CVSS v3.1 Breakdown