Fixed Intel

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.

Remediation Deadline: Dec 24, 2025

CVE-2021-26828

High
EPSS 80.0%CISA KEV
OpenPLC/ScadaBR

Description

OpenPLC ScadaBR contains an unrestricted upload of file with dangerous type vulnerability that allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.

EPSS — Exploit Probability

80.0%

Higher than 99.1% of all CVEs

Required Action

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/SCADA-LTS/Scada-LTS/pull/2174 ; https://nvd.nist.gov/vuln/detail/CVE-2021-26828

Risk Assessment

HIGH
In CISA KEV
High EPSS

Details

Severity
High
EPSS
80.0%
CISA KEV
Yes
Ransomware
Unknown
Articles
0

Timeline

Published

Dec 3, 2025

Added to KEV

Dec 3, 2025

Remediation Due

Dec 24, 2025

Affected Product

OpenPLC

ScadaBR

View all OpenPLC CVEs