CVE-2021-268295.4MediumCWE-79

CVE-2021-26829: OpenPLC ScadaBR vulnerability

OpenPLC · ScadaBR

Affected: OpenPLC ScadaBR · Exploitation: in CISA KEV since 28 Nov 2025

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

ExploitationIn CISA KEV

In CISA KEVCISA KEV catalogue28 Nov 2025
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not established: not seen

48.0%probability of exploitation in the next 30 days

98th percentile

050100

Higher than 98% of scored CVEs

5.4MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
CISA KEV: Listed since 28 Nov 2025 · catalogue entry
Public check: No public nuclei template
Weakness: Cross-site Scripting
Vendor: OpenPLC
Published: June 2021
Band: Exploited in the wild, June 2021

What changed

28 Nov 2025
CISA added it to the KEV catalogue CISA

CoverageNo articles yet

No CyberSIXT article names CVE-2021-26829 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.