All vulnerabilities
CVE-2021-26829

OpenPLC ScadaBR Cross-site Scripting Vulnerability

OpenPLC ScadaBR
Open in ThreatlineRecord JSON
CVSS
5.4Medium
ExploitationExploited in the wildAdded to KEV 28 Nov 2025CISA KEV
Exploit odds (EPSS)48.0%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline19 Dec 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 11 Jun 2021, 11:05 UTCPublishedCVE List
  2. 28 Nov 2025Added to CISA KEVCISA KEV

Description

OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 4