https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-45893.htmlhttps://patchthecve.com/cve/CVE-2021-45893.htmlWed, 17 Jun 2026 04:14:12 +0000HIGH 7.5: An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is Improper Handling of Case Sensitivity, which makes password guessing easier.https://patchthecve.com/cve/CVE-2021-45892.htmlhttps://patchthecve.com/cve/CVE-2021-45892.htmlWed, 17 Jun 2026 04:14:12 +0000MEDIUM 5.9: An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is storage of Passwords in a Recoverable Format.https://patchthecve.com/cve/CVE-2021-45891.htmlhttps://patchthecve.com/cve/CVE-2021-45891.htmlWed, 17 Jun 2026 04:14:12 +0000HIGH 8.8: An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4., that allows attackers to escalate privileges within the application, since all permission checks are done client-side, not server-side.https://patchthecve.com/cve/CVE-2021-45894.htmlhttps://patchthecve.com/cve/CVE-2021-45894.htmlWed, 17 Jun 2026 04:14:12 +0000MEDIUM 5.9: An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is Cleartext Transmission of Sensitive Information.