https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-43938.htmlhttps://patchthecve.com/cve/CVE-2021-43938.htmlWed, 17 Jun 2026 04:11:39 +0000HIGH 8.1: Elcomplus SmartPTT SCADA Server is vulnerable to an unauthenticated user can request various files from the server without any authentication or authorization.https://patchthecve.com/cve/CVE-2021-43937.htmlhttps://patchthecve.com/cve/CVE-2021-43937.htmlWed, 17 Jun 2026 04:11:39 +0000HIGH 7.6: Elcomplus SmartPTT SCADA Server web application does not, or cannot, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.https://patchthecve.com/cve/CVE-2022-21155.htmlhttps://patchthecve.com/cve/CVE-2022-21155.htmlWed, 17 Jun 2026 04:25:38 +0000HIGH 7.5: A specially crafted packet sent to the Fernhill SCADA Server Version 3.77 and earlier may cause an exception, causing the server process (FHSvrService.exe) to exit.