CVE-2021-26828 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
December 2, 2025
Last Seen
December 2, 2025

CVE-2021-26828 is a vulnerability tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed December 2, 2025; most recent activity December 2, 2025.

Related Threat Clusters

  • CISA Flags OpenPLC ScadaBR Vulnerability as Actively Exploited

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added the OpenPLC ScadaBR vulnerability, tracked as CVE-2021-26829, to its Known Exploited Vulnerabilities catalog after confirming active…

    2 articles · Updated December 2, 2025

Recent Intelligence Reports

  • OpenPLC ScadaBR added to CISA's known exploited list after confirmed attacks — Industrialcyber.Co · December 2, 2025

Related Entities

Russia CVE-2021-26829 T1136 - Create Account Web Shell Linux Windows OpenPLC ScadaBR XSS

CVSS v3.1 Breakdown