# Windows Server 2012 security updates Patch Radar has 274 security fixes for Windows Server 2012, closing 4,727 CVEs, 137 of which are being exploited. The newest is KB5126835, released October 13, 2026. - Web page: https://patchblox.com/security/product/microsoft/windows-server-2012 - Platform: Microsoft - Vendor: Microsoft - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | [KB5126835](https://patchblox.com/security/data/fix/microsoft/kb5126835.md) | Oct 13, 2026 | | Urgent | 612 | 0 | | [KB5127357](https://patchblox.com/security/data/fix/microsoft/kb5127357.md) | Oct 13, 2026 | | High | 2 | 0 | | [KB5123065](https://patchblox.com/security/data/fix/microsoft/kb5123065.md) | Sep 8, 2026 | | Patch now | 400 | 1 | | [KB5120386](https://patchblox.com/security/data/fix/microsoft/kb5120386.md) | Aug 11, 2026 | | Patch now | 131 | 1 | | [KB5099445](https://patchblox.com/security/data/fix/microsoft/kb5099445.md) | Jul 14, 2026 | | Patch now | 171 | 2 | | [KB5099415](https://patchblox.com/security/data/fix/microsoft/kb5099415.md) | Jul 14, 2026 | | High | 1 | 0 | | [KB5094042](https://patchblox.com/security/data/fix/microsoft/kb5094042.md) | Jun 9, 2026 | | Urgent | 60 | 0 | | [KB5087470](https://patchblox.com/security/data/fix/microsoft/kb5087470.md) | May 12, 2026 | | Urgent | 39 | 0 | | [KB5082127](https://patchblox.com/security/data/fix/microsoft/kb5082127.md) | Apr 14, 2026 | | Urgent | 55 | 0 | | [KB5082806](https://patchblox.com/security/data/fix/microsoft/kb5082806.md) | Apr 14, 2026 | | High | 1 | 0 | | [KB5078775](https://patchblox.com/security/data/fix/microsoft/kb5078775.md) | Mar 10, 2026 | | Urgent | 31 | 0 | | [KB5078738](https://patchblox.com/security/data/fix/microsoft/kb5078738.md) | Mar 10, 2026 | | High | 1 | 0 | | [KB5075971](https://patchblox.com/security/data/fix/microsoft/kb5075971.md) | Feb 10, 2026 | | Patch now | 13 | 4 | | [KB5073698](https://patchblox.com/security/data/fix/microsoft/kb5073698.md) | Jan 13, 2026 | | Patch now | 36 | 1 | | [KB5071505](https://patchblox.com/security/data/fix/microsoft/kb5071505.md) | Dec 9, 2025 | | Urgent | 10 | 0 | | [KB5068907](https://patchblox.com/security/data/fix/microsoft/kb5068907.md) | Nov 11, 2025 | | Urgent | 17 | 0 | | [KB5070887](https://patchblox.com/security/data/fix/microsoft/kb5070887.md) | Oct 23, 2025 | | Patch now | 1 | 1 | | [KB5066875](https://patchblox.com/security/data/fix/microsoft/kb5066875.md) | Oct 14, 2025 | | Patch now | 46 | 3 | | [KB5066840](https://patchblox.com/security/data/fix/microsoft/kb5066840.md) | Oct 14, 2025 | | High | 3 | 0 | | [KB5065509](https://patchblox.com/security/data/fix/microsoft/kb5065509.md) | Sep 9, 2025 | | Urgent | 34 | 0 | | [KB5065435](https://patchblox.com/security/data/fix/microsoft/kb5065435.md) | Sep 9, 2025 | | Routine | 2 | 0 | | [KB5063906](https://patchblox.com/security/data/fix/microsoft/kb5063906.md) | Aug 12, 2025 | | Urgent | 46 | 0 | | [KB5062592](https://patchblox.com/security/data/fix/microsoft/kb5062592.md) | Jul 8, 2025 | | Urgent | 59 | 0 | | [KB5061059](https://patchblox.com/security/data/fix/microsoft/kb5061059.md) | Jun 10, 2025 | | Patch now | 20 | 2 | | [KB5060996](https://patchblox.com/security/data/fix/microsoft/kb5060996.md) | Jun 10, 2025 | | Patch now | 1 | 1 | | [KB5058451](https://patchblox.com/security/data/fix/microsoft/kb5058451.md) | May 13, 2025 | | Patch now | 33 | 4 | | [KB5058380](https://patchblox.com/security/data/fix/microsoft/kb5058380.md) | May 13, 2025 | | Patch now | 1 | 1 | | [KB5055581](https://patchblox.com/security/data/fix/microsoft/kb5055581.md) | Apr 8, 2025 | | Patch now | 47 | 1 | | [KB5055515](https://patchblox.com/security/data/fix/microsoft/kb5055515.md) | Apr 8, 2025 | | High | 1 | 0 | | [KB5053886](https://patchblox.com/security/data/fix/microsoft/kb5053886.md) | Mar 11, 2025 | | Patch now | 24 | 7 | | [KB5052020](https://patchblox.com/security/data/fix/microsoft/kb5052020.md) | Feb 11, 2025 | | Patch now | 23 | 1 | | [KB5051972](https://patchblox.com/security/data/fix/microsoft/kb5051972.md) | Feb 11, 2025 | | Urgent | 1 | 0 | | [KB5050004](https://patchblox.com/security/data/fix/microsoft/kb5050004.md) | Jan 14, 2025 | | Urgent | 93 | 0 | | [KB5049994](https://patchblox.com/security/data/fix/microsoft/kb5049994.md) | Jan 14, 2025 | | Urgent | 7 | 0 | | [KB5048699](https://patchblox.com/security/data/fix/microsoft/kb5048699.md) | Dec 10, 2024 | | Patch now | 30 | 1 | | [KB5046697](https://patchblox.com/security/data/fix/microsoft/kb5046697.md) | Nov 12, 2024 | | Urgent | 20 | 0 | | [KB5044342](https://patchblox.com/security/data/fix/microsoft/kb5044342.md) | Oct 8, 2024 | | Patch now | 46 | 1 | | [KB5043125](https://patchblox.com/security/data/fix/microsoft/kb5043125.md) | Sep 10, 2024 | | Patch now | 21 | 3 | | [KB5043049](https://patchblox.com/security/data/fix/microsoft/kb5043049.md) | Sep 10, 2024 | | Patch now | 2 | 1 | | [KB5041851](https://patchblox.com/security/data/fix/microsoft/kb5041851.md) | Aug 13, 2024 | | Patch now | 35 | 2 | | [KB5040485](https://patchblox.com/security/data/fix/microsoft/kb5040485.md) | Jul 9, 2024 | | Patch now | 62 | 1 | | [KB5039260](https://patchblox.com/security/data/fix/microsoft/kb5039260.md) | Jun 11, 2024 | | Patch now | 20 | 2 | | [KB5037778](https://patchblox.com/security/data/fix/microsoft/kb5037778.md) | May 14, 2024 | | Urgent | 24 | 0 | | [KB5036969](https://patchblox.com/security/data/fix/microsoft/kb5036969.md) | Apr 9, 2024 | | Patch now | 53 | 1 | | [KB5035930](https://patchblox.com/security/data/fix/microsoft/kb5035930.md) | Mar 12, 2024 | | Urgent | 25 | 0 | | [KB5034830](https://patchblox.com/security/data/fix/microsoft/kb5034830.md) | Feb 13, 2024 | | Urgent | 30 | 0 | | [KB5034184](https://patchblox.com/security/data/fix/microsoft/kb5034184.md) | Jan 9, 2024 | | Urgent | 22 | 0 | | [KB5034120](https://patchblox.com/security/data/fix/microsoft/kb5034120.md) | Jan 9, 2024 | | Urgent | 1 | 0 | | [KB5033429](https://patchblox.com/security/data/fix/microsoft/kb5033429.md) | Dec 12, 2023 | | Urgent | 18 | 0 | | [KB5033376](https://patchblox.com/security/data/fix/microsoft/kb5033376.md) | Dec 12, 2023 | | Urgent | 1 | 0 | | [KB5032247](https://patchblox.com/security/data/fix/microsoft/kb5032247.md) | Nov 14, 2023 | | Patch now | 18 | 3 | | [KB5032191](https://patchblox.com/security/data/fix/microsoft/kb5032191.md) | Nov 14, 2023 | | Urgent | 1 | 0 | | [KB5031427](https://patchblox.com/security/data/fix/microsoft/kb5031427.md) | Oct 10, 2023 | | Patch now | 61 | 2 | | [KB5031442](https://patchblox.com/security/data/fix/microsoft/kb5031442.md) | Oct 10, 2023 | | Patch now | 61 | 2 | | [KB5031355](https://patchblox.com/security/data/fix/microsoft/kb5031355.md) | Oct 10, 2023 | | High | 1 | 0 | | [KB5030278](https://patchblox.com/security/data/fix/microsoft/kb5030278.md) | Sep 12, 2023 | | Urgent | 13 | 0 | | [KB5030279](https://patchblox.com/security/data/fix/microsoft/kb5030279.md) | Sep 12, 2023 | | Urgent | 13 | 0 | | [KB5030209](https://patchblox.com/security/data/fix/microsoft/kb5030209.md) | Sep 12, 2023 | | High | 1 | 0 | | [KB5029295](https://patchblox.com/security/data/fix/microsoft/kb5029295.md) | Aug 8, 2023 | | Patch now | 25 | 1 | | [KB5029308](https://patchblox.com/security/data/fix/microsoft/kb5029308.md) | Aug 8, 2023 | | Patch now | 25 | 1 | | [KB5028232](https://patchblox.com/security/data/fix/microsoft/kb5028232.md) | Jul 11, 2023 | | Patch now | 69 | 2 | | [KB5028233](https://patchblox.com/security/data/fix/microsoft/kb5028233.md) | Jul 11, 2023 | | Patch now | 69 | 2 | | [KB5028167](https://patchblox.com/security/data/fix/microsoft/kb5028167.md) | Jul 11, 2023 | | Patch now | 3 | 1 | | [KB5027281](https://patchblox.com/security/data/fix/microsoft/kb5027281.md) | Jun 13, 2023 | | Urgent | 20 | 0 | | [KB5027283](https://patchblox.com/security/data/fix/microsoft/kb5027283.md) | Jun 13, 2023 | | Urgent | 20 | 0 | | [KB5026411](https://patchblox.com/security/data/fix/microsoft/kb5026411.md) | May 9, 2023 | | Patch now | 15 | 1 | | [KB5026419](https://patchblox.com/security/data/fix/microsoft/kb5026419.md) | May 9, 2023 | | Patch now | 15 | 1 | | [KB5026366](https://patchblox.com/security/data/fix/microsoft/kb5026366.md) | May 9, 2023 | | Urgent | 1 | 0 | | [KB5025272](https://patchblox.com/security/data/fix/microsoft/kb5025272.md) | Apr 11, 2023 | | Patch now | 61 | 2 | | [KB5025287](https://patchblox.com/security/data/fix/microsoft/kb5025287.md) | Apr 11, 2023 | | Patch now | 61 | 2 | | [KB5023752](https://patchblox.com/security/data/fix/microsoft/kb5023752.md) | Mar 14, 2023 | | Urgent | 47 | 0 | | [KB5023756](https://patchblox.com/security/data/fix/microsoft/kb5023756.md) | Mar 14, 2023 | | Urgent | 47 | 0 | | [KB5022835](https://patchblox.com/security/data/fix/microsoft/kb5022835.md) | Mar 2, 2023 | | High | 1 | 0 | | [KB5022895](https://patchblox.com/security/data/fix/microsoft/kb5022895.md) | Feb 14, 2023 | | Patch now | 33 | 2 | | [KB5022903](https://patchblox.com/security/data/fix/microsoft/kb5022903.md) | Feb 14, 2023 | | Patch now | 33 | 2 | | [KB5022343](https://patchblox.com/security/data/fix/microsoft/kb5022343.md) | Jan 10, 2023 | | Urgent | 46 | 0 | | [KB5022348](https://patchblox.com/security/data/fix/microsoft/kb5022348.md) | Jan 10, 2023 | | Urgent | 46 | 0 | | [KB5021285](https://patchblox.com/security/data/fix/microsoft/kb5021285.md) | Dec 13, 2022 | | Urgent | 19 | 0 | | [KB5021303](https://patchblox.com/security/data/fix/microsoft/kb5021303.md) | Dec 13, 2022 | | Urgent | 19 | 0 | | [KB5020003](https://patchblox.com/security/data/fix/microsoft/kb5020003.md) | Nov 8, 2022 | | Patch now | 21 | 3 | | [KB5020009](https://patchblox.com/security/data/fix/microsoft/kb5020009.md) | Nov 8, 2022 | | Patch now | 21 | 3 | | [KB5019958](https://patchblox.com/security/data/fix/microsoft/kb5019958.md) | Nov 8, 2022 | | Patch now | 3 | 2 | | [KB5018457](https://patchblox.com/security/data/fix/microsoft/kb5018457.md) | Oct 11, 2022 | | Patch now | 48 | 2 | | [KB5018478](https://patchblox.com/security/data/fix/microsoft/kb5018478.md) | Oct 11, 2022 | | Patch now | 48 | 2 | | [KB5017370](https://patchblox.com/security/data/fix/microsoft/kb5017370.md) | Sep 13, 2022 | | Patch now | 35 | 1 | | [KB5017377](https://patchblox.com/security/data/fix/microsoft/kb5017377.md) | Sep 13, 2022 | | Patch now | 35 | 1 | | [KB5016672](https://patchblox.com/security/data/fix/microsoft/kb5016672.md) | Aug 9, 2022 | | Patch now | 35 | 1 | | [KB5016684](https://patchblox.com/security/data/fix/microsoft/kb5016684.md) | Aug 9, 2022 | | Patch now | 35 | 1 | | [KB5012170](https://patchblox.com/security/data/fix/microsoft/kb5012170.md) | Aug 9, 2022 | | Urgent | 4 | 0 | | [KB5015863](https://patchblox.com/security/data/fix/microsoft/kb5015863.md) | Jul 12, 2022 | | Patch now | 36 | 1 | | [KB5015875](https://patchblox.com/security/data/fix/microsoft/kb5015875.md) | Jul 12, 2022 | | Patch now | 36 | 1 | | [KB5014741](https://patchblox.com/security/data/fix/microsoft/kb5014741.md) | Jun 14, 2022 | | Patch now | 24 | 1 | | [KB5014747](https://patchblox.com/security/data/fix/microsoft/kb5014747.md) | Jun 14, 2022 | | Patch now | 24 | 1 | | [KB5014017](https://patchblox.com/security/data/fix/microsoft/kb5014017.md) | May 10, 2022 | | Patch now | 43 | 1 | | [KB5014018](https://patchblox.com/security/data/fix/microsoft/kb5014018.md) | May 10, 2022 | | Patch now | 43 | 1 | | [KB5012650](https://patchblox.com/security/data/fix/microsoft/kb5012650.md) | Apr 12, 2022 | | Patch now | 59 | 2 | | [KB5012666](https://patchblox.com/security/data/fix/microsoft/kb5012666.md) | Apr 12, 2022 | | Patch now | 59 | 2 | | [KB5011527](https://patchblox.com/security/data/fix/microsoft/kb5011527.md) | Mar 8, 2022 | | Urgent | 21 | 0 | | [KB5011535](https://patchblox.com/security/data/fix/microsoft/kb5011535.md) | Mar 8, 2022 | | Urgent | 21 | 0 | | [KB5011486](https://patchblox.com/security/data/fix/microsoft/kb5011486.md) | Mar 8, 2022 | | Urgent | 1 | 0 | Showing the newest 100 of 274 fixes. --- Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo