CVE-2021-21551 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
August 20, 2026
Last Seen
August 20, 2026

Related Threat Clusters

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    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…

    2 articles · Updated August 20, 2026

Recent Intelligence Reports

  • CVE-2021-21551 — nvd.nist.gov · August 20, 2026
  • UAT-10147 deploys SPECTRE: A cross — Blog.Talosintelligence · August 20, 2026

CVSS v3.1 Breakdown