CVE-2021-26829 - Vulnerability Details

Related Threat Clusters

• CISA Adds ScadaBR Vulnerability to KEV Catalog After Hacktivist Attack

  CISA has added CVE-2021-26829, an old vulnerability in OpenPLC ScadaBR, to its Known Exploited Vulnerabilities catalog following a hacktivist attack targeting industrial control systems (ICS). This inclusion indicates…

  2 articles · Updated December 1, 2025
• 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
• CISA Adds ScadaBR Vulnerability CVE-2021-26829 to KEV Catalogue

  The US Cybersecurity and Infrastructure Security Agency (CISA) has included a four-year-old vulnerability in ScadaBR, identified as CVE-2021-26829, in its Known Exploited Vulnerabilities (KEV) catalogue. This…

  2 articles · Updated December 1, 2025
• CISA Warns of Active Exploitation of OpenPLC ScadaBR Vulnerability

  CISA has added CVE-2021-26829 to its Known Exploited Vulnerabilities catalog due to active exploitation of the OpenPLC ScadaBR vulnerability. This vulnerability affects systems using OpenPLC ScadaBR, posing risks to…

  7 articles · Updated November 30, 2025

Recent Intelligence Reports

• OpenPLC ScadaBR added to CISA's known exploited list after confirmed attacks — Industrialcyber.Co · December 2, 2025
• CISA Warns of ScadaBR Vulnerability After Hacktivist ICS Attack — Feeds.Feedburner · December 1, 2025
• U.S. CISA adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog — Securityaffairs.Co · December 1, 2025
• CISA adds four-year-old ScadaBR vulnerability to KEV Catalog — Cybersecurityconnect.Au · December 1, 2025
• CISA Adds CVE-2021 — Webpronews · November 30, 2025
• CISA Warns of OpenPLC ScadaBR Vulnerability Exploitation — Redhotcyber · November 30, 2025

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