High severity · published Jun 11, 2021
CVE-2021-26828
OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability
In wildKEV
8.8
CVSS
39.1%
EPSS
Yes
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)39.1% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Dec 3, 2025
Federal remediation dueDec 24, 2025
Ransomware campaign useNot known
Affected products
Which versions
SC
Scadabr · Scadabr
through 0.9.1; through 1.12.4 · source: NVD, KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26828
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26828
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://youtu.be/k1teIStQr1A
x_refsource_MISC
http://packetstormsecurity.com/files/162564/ScadaBR-1.0-1.1CE-Linux-Shell-Upload.html
x_refsource_MISC
http://forum.scadabr.com.br/t/report-falhas-de-seguranca-em-versoes-do-scadabr/3615/4
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