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CVE-2021-21551

CVE

Threat entity extracted from intelligence sources

Frequency
6
occurrences
First Seen
August 20, 2026
Last Seen
October 4, 2026
API
Exploited in Wild
—
Ransomware Use
—
Public Exploits
—
Attack Vector
—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

In early 2026, Cisco Talos identified UAT-10147, a Chinese-speaking cybercrime group targeting vulnerable web servers across multiple countries, including Brazil, China, and Canada. The group employs agentic AI to enhance its attack methods, transitioning from simple scripting to semi-autonomous off...

Dell has disclosed multiple vulnerabilities in its Container Storage Modules (CSM) affecting Kubernetes environments. The most severe flaws, with a CVSS score of 10.0, enable unauthenticated remote attackers to gain full administrative control over storage infrastructure. These vulnerabilities inclu...

Dell has issued security updates for six critical vulnerabilities in its Container Storage Modules (CSM) that could enable unauthenticated attackers to gain administrative access to storage backends and root control over Kubernetes clusters. The vulnerabilities, tracked as CVE-2026-63688 and CVE-202...

Public Exploits

Checking GitHub for proof-of-concept code…