CVE-2021-26828 is a vulnerability in Openplcproject Scadabr
Published on June 11, 2021
OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.
Known Exploited Vulnerability
This OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. 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.
The following remediation steps are recommended / required by December 24, 2025: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2021-26828 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is an Unrestricted File Upload Vulnerability?
The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.
CVE-2021-26828 has been classified to as an Unrestricted File Upload vulnerability or weakness.
Products Associated with CVE-2021-26828
Want to know whenever a new CVE is published for Openplcproject Scadabr? stack.watch will email you.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.