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OpenPLC exploited vulnerabilities: 2 in CISA KEV, 2 in the last 12 months

Gociux · updated with each KEV addition · latest 3 Dec 2025

CISA lists 2 OpenPLC vulnerabilities as exploited in the wild, 2 of them added in the last 12 months (up from 0 in the 12 months before). 0 (0%) are known to be used in ransomware campaigns. For entries added in the last two years, the median time from CVE publication to the KEV listing was 1633 days. Most affected: ScadaBR (2).

2in CISA KEV
2last 12 months
0%ransomware-linked
1633dpublication → KEV (median)

Exploited CVEs added per year

000020
202120222023202420252026

Most affected products

ProductKEV entries
ScadaBR2

Every exploited OpenPLC CVE

CVEVulnerabilityAdded
CVE-2021-26828OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type VulnerabilityScadaBR3 Dec 2025
CVE-2021-26829OpenPLC ScadaBR Cross-site Scripting VulnerabilityScadaBR28 Nov 2025

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How to read this: CISA KEV lists vulnerabilities with reliable evidence of exploitation; a vendor with many entries is often one with a large, internet-facing install base, not necessarily worse engineering. "Publication → KEV" is the median number of days between the CVE's publication and its addition to KEV, for entries added in the last 24 months (2 entries); it is an upper bound on how long defenders had, since exploitation usually starts before the listing. Under NIS2 article 21(2)(d), supplier security is part of your risk management; this page is a starting point for that review. Compare vendors on the scorecard index.

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