Microsoft · Microsoft
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) security updates
Patch Radar has 53 security fixes for Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), closing 52 CVEs, 3 of which are being exploited. The newest security fix is KB5066739, released October 14, 2025. This product is no longer supported.
Unsupported product3 exploited CVEs
Latest version
n/a
Release date not known
Security fixes
53
On record in Patch Radar
CVEs
52
Closed by those fixes
Exploited
3
Vendor report or CISA KEV
Security fixes, newest first
| Priority | Fix | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|
| High | KB5066739 | 1 | Oct 14, 2025 | ||
| High | KB5044085 | 2 | Oct 23, 2024 | ||
| High | KB5044095 | 2 | Oct 23, 2024 | ||
| High | KB5041021 | 1 | Jul 9, 2024 | ||
| High | KB5041026 | 1 | Jul 9, 2024 | ||
| Patch now | KB5034269 | 4 | 1 | May 8, 2024 | |
| Patch now | KB5034277 | 3 | 1 | May 8, 2024 | |
| Urgent | KB5030182 | 5 | Dec 12, 2023 | ||
| High | KB5032185 | 2 | Nov 14, 2023 | ||
| High | KB5032341 | 2 | Nov 14, 2023 | ||
| Urgent | KB5027531 | 6 | Jun 13, 2023 | ||
| Urgent | KB5027540 | 6 | Jun 13, 2023 | ||
| Urgent | KB5022731 | 2 | Feb 14, 2023 | ||
| Urgent | KB5022783 | 2 | Feb 14, 2023 | ||
| High | KB5021079 | 1 | Dec 13, 2022 | ||
| High | KB5021091 | 1 | Dec 13, 2022 | ||
| High | KB5012324 | 1 | Apr 19, 2022 | ||
| High | KB5012329 | 1 | Apr 19, 2022 | ||
| Urgent | KB4556399 | 3 | May 14, 2020 | ||
| Urgent | KB4556403 | 3 | May 14, 2020 | ||
| Patch now | KB4534976 | 3 | 1 | Jan 14, 2020 | |
| Patch now | KB4535102 | 3 | 1 | Jan 14, 2020 | |
| Urgent | KB4507411 | 3 | Jul 9, 2019 | ||
| Urgent | KB4507420 | 3 | Jul 9, 2019 | ||
| High | KB4498961 | 4 | May 14, 2019 | ||
| High | KB4499406 | 4 | May 14, 2019 | ||
| High | KB4487078 | 2 | Feb 12, 2019 | ||
| High | KB4487121 | 2 | Feb 12, 2019 | ||
| High | KB4481480 | 1 | Jan 8, 2019 | ||
| High | KB4481481 | 1 | Jan 8, 2019 | ||
| Urgent | KB4470600 | 2 | Dec 11, 2018 | ||
| Urgent | KB4470641 | 2 | Dec 11, 2018 | ||
| Urgent | KB4457044 | 1 | Sep 12, 2018 | ||
| Urgent | KB4457055 | 1 | Sep 12, 2018 | ||
| High | KB4344152 | 2 | Aug 14, 2018 | ||
| High | KB4344177 | 2 | Aug 14, 2018 | ||
| High | KB4338423 | 2 | Jul 10, 2018 | ||
| High | KB4338612 | 2 | Jul 10, 2018 | ||
| High | KB4095514 | 2 | May 8, 2018 | ||
| High | KB4095874 | 2 | May 8, 2018 | ||
| High | KB4054176 | 2 | Jan 18, 2018 | ||
| High | KB4054998 | 2 | Jan 18, 2018 | ||
| Patch now | KB4040966 | 1 | 1 | Sep 12, 2017 | |
| Patch now | KB4040980 | 1 | 1 | Sep 12, 2017 | |
| High | KB4019108 | 1 | May 9, 2017 | ||
| High | KB4019112 | 1 | May 9, 2017 | ||
| Urgent | KB4014981 | 1 | Apr 11, 2017 | ||
| Urgent | KB4014985 | 1 | Apr 11, 2017 | ||
| High | KB3163245 | 1 | Nov 8, 2016 | ||
| High | KB3188730 | 1 | Oct 11, 2016 | ||
| High | KB3188740 | 1 | Oct 11, 2016 | ||
| High | KB3142024 | 1 | May 10, 2016 | ||
| Urgent | KB3142042 | 1 | Apr 12, 2016 |
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