https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-20988.htmlhttps://patchthecve.com/cve/CVE-2021-20988.htmlWed, 17 Jun 2026 03:34:36 +0000HIGH 8.6: In Hilscher rcX RTOS versions prios to V2.1.14.1 the actual UDP packet length is not verified against the length indicated by the packet. This may lead to a denial of service of the affected device.https://patchthecve.com/cve/CVE-2021-20987.htmlhttps://patchthecve.com/cve/CVE-2021-20987.htmlWed, 17 Jun 2026 03:34:36 +0000HIGH 8.6: A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.https://patchthecve.com/cve/CVE-2021-20986.htmlhttps://patchthecve.com/cve/CVE-2021-20986.htmlWed, 17 Jun 2026 03:34:36 +0000HIGH 7.5: A Denial of Service vulnerability was found in Hilscher PROFINET IO Device V3 in versions prior to V3.14.0.7. This may lead to unexpected loss of cyclic communication or interruption of acyclic communication.