# Windows Server 2019 security updates

Patch Radar has 103 security fixes for Windows Server 2019, closing 6,500 CVEs, 160 of which are being exploited. The newest is KB5126651 (17763.9376), released October 13, 2026.

- Web page: https://patchblox.com/security/product/microsoft/windows-server-2019
- Platform: Microsoft
- Vendor: Microsoft
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [KB5126651](https://patchblox.com/security/data/fix/microsoft/kb5126651.md) | Oct 13, 2026 | 17763.9376 | Patch now | 918 | 1 |
| [KB5122876](https://patchblox.com/security/data/fix/microsoft/kb5122876.md) | Sep 8, 2026 | 17763.9245 | Patch now | 623 | 1 |
| [KB5120238](https://patchblox.com/security/data/fix/microsoft/kb5120238.md) | Aug 11, 2026 | 17763.9121 | Patch now | 174 | 1 |
| [KB5099538](https://patchblox.com/security/data/fix/microsoft/kb5099538.md) | Jul 14, 2026 | 17763.9020 | Patch now | 308 | 2 |
| [KB5094123](https://patchblox.com/security/data/fix/microsoft/kb5094123.md) | Jun 9, 2026 | 17763.8880 | Urgent | 84 | 0 |
| [KB5087538](https://patchblox.com/security/data/fix/microsoft/kb5087538.md) | May 12, 2026 | 17763.8755 | Urgent | 55 | 0 |
| [KB5082123](https://patchblox.com/security/data/fix/microsoft/kb5082123.md) | Apr 14, 2026 | 17763.8644 | Patch now | 104 | 1 |
| [KB5078752](https://patchblox.com/security/data/fix/microsoft/kb5078752.md) | Mar 10, 2026 | 17763.8511 | Urgent | 40 | 0 |
| [KB5075904](https://patchblox.com/security/data/fix/microsoft/kb5075904.md) | Feb 10, 2026 | 17763.8389 | Patch now | 24 | 5 |
| [KB5073723](https://patchblox.com/security/data/fix/microsoft/kb5073723.md) | Jan 13, 2026 | 17763.8276 | Patch now | 72 | 1 |
| [KB5071544](https://patchblox.com/security/data/fix/microsoft/kb5071544.md) | Dec 9, 2025 | 17763.8146 | Patch now | 26 | 1 |
| [KB5068791](https://patchblox.com/security/data/fix/microsoft/kb5068791.md) | Nov 11, 2025 | 17763.8027 | Patch now | 34 | 1 |
| [KB5070883](https://patchblox.com/security/data/fix/microsoft/kb5070883.md) | Oct 23, 2025 | 17763.7922 | Patch now | 1 | 1 |
| [KB5066586](https://patchblox.com/security/data/fix/microsoft/kb5066586.md) | Oct 14, 2025 | 17763.7919 | Patch now | 98 | 3 |
| [KB5065428](https://patchblox.com/security/data/fix/microsoft/kb5065428.md) | Sep 9, 2025 | 17763.7792 | Urgent | 52 | 0 |
| [KB5063877](https://patchblox.com/security/data/fix/microsoft/kb5063877.md) | Aug 12, 2025 | 17763.7678 | Urgent | 54 | 0 |
| [KB5062557](https://patchblox.com/security/data/fix/microsoft/kb5062557.md) | Jul 8, 2025 | 17763.7558 | Urgent | 94 | 0 |
| [KB5060531](https://patchblox.com/security/data/fix/microsoft/kb5060531.md) | Jun 10, 2025 | 17763.7434 | Patch now | 39 | 2 |
| [KB5058392](https://patchblox.com/security/data/fix/microsoft/kb5058392.md) | May 13, 2025 | 17763.7314 | Patch now | 41 | 5 |
| [KB5055519](https://patchblox.com/security/data/fix/microsoft/kb5055519.md) | Apr 8, 2025 | 17763.7136 | Patch now | 75 | 1 |
| [KB5053596](https://patchblox.com/security/data/fix/microsoft/kb5053596.md) | Mar 11, 2025 | 17763.7009 | Patch now | 34 | 6 |
| [KB5052000](https://patchblox.com/security/data/fix/microsoft/kb5052000.md) | Feb 11, 2025 | 17763.6893 | Patch now | 34 | 2 |
| [KB5050008](https://patchblox.com/security/data/fix/microsoft/kb5050008.md) | Jan 14, 2025 | 17763.6775 | Urgent | 118 | 0 |
| [KB5048661](https://patchblox.com/security/data/fix/microsoft/kb5048661.md) | Dec 10, 2024 | 17763.6659 | Patch now | 56 | 1 |
| [KB5046615](https://patchblox.com/security/data/fix/microsoft/kb5046615.md) | Nov 12, 2024 | 17763.6532 | Patch now | 31 | 2 |
| [KB5044277](https://patchblox.com/security/data/fix/microsoft/kb5044277.md) | Oct 8, 2024 | 17763.6414 | Patch now | 79 | 2 |
| [KB5043050](https://patchblox.com/security/data/fix/microsoft/kb5043050.md) | Sep 10, 2024 | 17763.6293 | Patch now | 37 | 3 |
| [KB5041578](https://patchblox.com/security/data/fix/microsoft/kb5041578.md) | Aug 13, 2024 | 17763.6189 | Patch now | 46 | 4 |
| [KB5040430](https://patchblox.com/security/data/fix/microsoft/kb5040430.md) | Jul 9, 2024 | 17763.6054 | Patch now | 85 | 2 |
| [KB5039217](https://patchblox.com/security/data/fix/microsoft/kb5039217.md) | Jun 11, 2024 | 17763.5936 | Patch now | 32 | 3 |
| [KB5037765](https://patchblox.com/security/data/fix/microsoft/kb5037765.md) | May 14, 2024 | 17763.5820 | Patch now | 49 | 2 |
| [KB5036896](https://patchblox.com/security/data/fix/microsoft/kb5036896.md) | Apr 9, 2024 | 17763.5696 | Patch now | 76 | 2 |
| [KB5035849](https://patchblox.com/security/data/fix/microsoft/kb5035849.md) | Mar 12, 2024 | 17763.5576 | Patch now | 32 | 1 |
| [KB5034768](https://patchblox.com/security/data/fix/microsoft/kb5034768.md) | Feb 13, 2024 | 17763.5458 | Patch now | 39 | 3 |
| [KB5034127](https://patchblox.com/security/data/fix/microsoft/kb5034127.md) | Jan 9, 2024 | 17763.5329 | Urgent | 34 | 0 |
| [KB5033371](https://patchblox.com/security/data/fix/microsoft/kb5033371.md) | Dec 12, 2023 | 17763.5206 | Urgent | 19 | 0 |
| [KB5032196](https://patchblox.com/security/data/fix/microsoft/kb5032196.md) | Nov 14, 2023 | 17763.5122 | Patch now | 30 | 4 |
| [KB5031361](https://patchblox.com/security/data/fix/microsoft/kb5031361.md) | Oct 10, 2023 | 17763.4974 | Patch now | 79 | 3 |
| [KB5030214](https://patchblox.com/security/data/fix/microsoft/kb5030214.md) | Sep 12, 2023 | 17763.4851 | Patch now | 18 | 1 |
| [KB5029247](https://patchblox.com/security/data/fix/microsoft/kb5029247.md) | Aug 8, 2023 | 17763.4737 | Patch now | 32 | 1 |
| [KB5028168](https://patchblox.com/security/data/fix/microsoft/kb5028168.md) | Jul 11, 2023 | 17763.4645 | Patch now | 95 | 3 |
| [KB5027222](https://patchblox.com/security/data/fix/microsoft/kb5027222.md) | Jun 13, 2023 | 17763.4499 | Patch now | 32 | 1 |
| [KB5026362](https://patchblox.com/security/data/fix/microsoft/kb5026362.md) | May 9, 2023 | 17763.4377 | Urgent | 18 | 0 |
| [KB5025229](https://patchblox.com/security/data/fix/microsoft/kb5025229.md) | Apr 11, 2023 | 17763.4252 | Patch now | 71 | 3 |
| [KB5023702](https://patchblox.com/security/data/fix/microsoft/kb5023702.md) | Mar 14, 2023 | 17763.4131 | Patch now | 56 | 1 |
| [KB5022840](https://patchblox.com/security/data/fix/microsoft/kb5022840.md) | Feb 14, 2023 | 17763.4010 | Patch now | 35 | 2 |
| [KB5022286](https://patchblox.com/security/data/fix/microsoft/kb5022286.md) | Jan 10, 2023 | 17763.3887 | Patch now | 61 | 1 |
| [KB5021237](https://patchblox.com/security/data/fix/microsoft/kb5021237.md) | Dec 13, 2022 | 17763.3770 | Patch now | 26 | 1 |
| [KB5019966](https://patchblox.com/security/data/fix/microsoft/kb5019966.md) | Nov 8, 2022 | 17763.3650 | Patch now | 35 | 5 |
| [KB5018419](https://patchblox.com/security/data/fix/microsoft/kb5018419.md) | Oct 11, 2022 | 17763.3532 | Patch now | 60 | 2 |
| [KB5017315](https://patchblox.com/security/data/fix/microsoft/kb5017315.md) | Sep 13, 2022 | 17763.3406 | Patch now | 42 | 1 |
| [KB5012170](https://patchblox.com/security/data/fix/microsoft/kb5012170.md) | Aug 9, 2022 |  | Urgent | 4 | 0 |
| [KB5016623](https://patchblox.com/security/data/fix/microsoft/kb5016623.md) | Aug 9, 2022 | 17763.3287 | Patch now | 58 | 1 |
| [KB5015811](https://patchblox.com/security/data/fix/microsoft/kb5015811.md) | Jul 12, 2022 | 17763.3165 | Patch now | 44 | 1 |
| [KB5014692](https://patchblox.com/security/data/fix/microsoft/kb5014692.md) | Jun 14, 2022 | 17763.3046 | Patch now | 31 | 1 |
| [KB5013941](https://patchblox.com/security/data/fix/microsoft/kb5013941.md) | May 10, 2022 | 17763.2928 | Patch now | 57 | 1 |
| [KB5012647](https://patchblox.com/security/data/fix/microsoft/kb5012647.md) | Apr 12, 2022 | 17763.2803 | Patch now | 92 | 2 |
| [KB5011503](https://patchblox.com/security/data/fix/microsoft/kb5011503.md) | Mar 8, 2022 | 17763.2686 | Urgent | 30 | 0 |
| [KB5010351](https://patchblox.com/security/data/fix/microsoft/kb5010351.md) | Feb 8, 2022 | 17763.2565 | Patch now | 20 | 3 |
| [KB5009557](https://patchblox.com/security/data/fix/microsoft/kb5009557.md) | Jan 11, 2022 | 17763.2452 | Patch now | 81 | 2 |
| [KB5008218](https://patchblox.com/security/data/fix/microsoft/kb5008218.md) | Dec 14, 2021 | 17763.2366 | Patch now | 28 | 1 |
| [KB5007206](https://patchblox.com/security/data/fix/microsoft/kb5007206.md) | Nov 9, 2021 | 17763.2300 | Patch now | 28 | 3 |
| [KB5006672](https://patchblox.com/security/data/fix/microsoft/kb5006672.md) | Oct 12, 2021 | 17763.2237 | Patch now | 41 | 2 |
| [KB5005568](https://patchblox.com/security/data/fix/microsoft/kb5005568.md) | Sep 14, 2021 | 17763.2183 | Patch now | 34 | 2 |
| [KB5005030](https://patchblox.com/security/data/fix/microsoft/kb5005030.md) | Aug 10, 2021 | 17763.2114 | Patch now | 27 | 5 |
| [KB5004244](https://patchblox.com/security/data/fix/microsoft/kb5004244.md) | Jul 13, 2021 | 17763.2061 | Patch now | 78 | 3 |
| [KB5004947](https://patchblox.com/security/data/fix/microsoft/kb5004947.md) | Jul 6, 2021 | 17763.2029 | Patch now | 1 | 1 |
| [KB5003646](https://patchblox.com/security/data/fix/microsoft/kb5003646.md) | Jun 8, 2021 | 17763.1999 | Patch now | 23 | 6 |
| [KB5003171](https://patchblox.com/security/data/fix/microsoft/kb5003171.md) | May 11, 2021 | 17763.1935 | Urgent | 18 | 0 |
| [KB5001342](https://patchblox.com/security/data/fix/microsoft/kb5001342.md) | Apr 13, 2021 | 17763.1879 | Patch now | 77 | 1 |
| [KB5000822](https://patchblox.com/security/data/fix/microsoft/kb5000822.md) | Mar 9, 2021 | 17763.1817 | Patch now | 46 | 2 |
| [KB4601345](https://patchblox.com/security/data/fix/microsoft/kb4601345.md) | Feb 9, 2021 | 17763.1757 | Patch now | 28 | 2 |
| [KB4598230](https://patchblox.com/security/data/fix/microsoft/kb4598230.md) | Jan 12, 2021 | 17763.1697 | Urgent | 58 | 0 |
| [KB4592440](https://patchblox.com/security/data/fix/microsoft/kb4592440.md) | Dec 8, 2020 | 17763.1637 | Urgent | 20 | 0 |
| [KB4586793](https://patchblox.com/security/data/fix/microsoft/kb4586793.md) | Nov 10, 2020 | 17763.1577 | Patch now | 53 | 1 |
| [KB4577668](https://patchblox.com/security/data/fix/microsoft/kb4577668.md) | Oct 13, 2020 | 17763.1518 | Urgent | 48 | 0 |
| [KB4570333](https://patchblox.com/security/data/fix/microsoft/kb4570333.md) | Sep 8, 2020 | 17763.1457 | Patch now | 80 | 1 |
| [KB4565349](https://patchblox.com/security/data/fix/microsoft/kb4565349.md) | Aug 11, 2020 | 17763.1397 | Patch now | 89 | 2 |
| [KB4558997](https://patchblox.com/security/data/fix/microsoft/kb4558997.md) | Jul 14, 2020 |  | High | 1 | 0 |
| [KB4558998](https://patchblox.com/security/data/fix/microsoft/kb4558998.md) | Jul 14, 2020 | 17763.1339 | Patch now | 86 | 1 |
| [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | 17763.1282 | Patch now | 94 | 1 |
| [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 | 17763.1217 | Patch now | 88 | 1 |
| [KB4549949](https://patchblox.com/security/data/fix/microsoft/kb4549949.md) | Apr 14, 2020 | 17763.1158 | Patch now | 69 | 4 |
| [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | 17763.1098 | Patch now | 89 | 1 |
| [KB4532691](https://patchblox.com/security/data/fix/microsoft/kb4532691.md) | Feb 11, 2020 | 17763.1039 | Patch now | 84 | 2 |
| [KB4534273](https://patchblox.com/security/data/fix/microsoft/kb4534273.md) | Jan 14, 2020 | 17763.973 | Patch now | 34 | 2 |
| [KB4530715](https://patchblox.com/security/data/fix/microsoft/kb4530715.md) | Dec 10, 2019 | 17763.914 | Urgent | 15 | 0 |
| [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 | 17763.864 | Patch now | 52 | 4 |
| [KB4519337](https://patchblox.com/security/data/fix/microsoft/kb4519337.md) | Oct 9, 2019 |  | High | 1 | 0 |
| [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 | 17763.805 | Patch now | 44 | 3 |
| [KB4512578](https://patchblox.com/security/data/fix/microsoft/kb4512578.md) | Sep 10, 2019 | 17763.737 | Patch now | 55 | 3 |
| [KB4511553](https://patchblox.com/security/data/fix/microsoft/kb4511553.md) | Aug 13, 2019 | 17763.678 | Urgent | 74 | 0 |
| [KB4507469](https://patchblox.com/security/data/fix/microsoft/kb4507469.md) | Jul 9, 2019 | 17763.615 | Patch now | 53 | 3 |
| [KB4503327](https://patchblox.com/security/data/fix/microsoft/kb4503327.md) | Jun 11, 2019 | 17763.557 | Patch now | 65 | 2 |
| [KB4494441](https://patchblox.com/security/data/fix/microsoft/kb4494441.md) | May 14, 2019 | 17763.503 | Patch now | 53 | 2 |
| [KB4493509](https://patchblox.com/security/data/fix/microsoft/kb4493509.md) | Apr 9, 2019 | 17763.437 | Patch now | 52 | 4 |
| [KB4489899](https://patchblox.com/security/data/fix/microsoft/kb4489899.md) | Mar 12, 2019 | 17763.379 | Patch now | 54 | 2 |
| [KB4487044](https://patchblox.com/security/data/fix/microsoft/kb4487044.md) | Feb 12, 2019 | 17763.316 | Patch now | 51 | 1 |
| [KB4480116](https://patchblox.com/security/data/fix/microsoft/kb4480116.md) | Jan 8, 2019 | 17763.253 | Patch now | 31 | 2 |
| [KB4471332](https://patchblox.com/security/data/fix/microsoft/kb4471332.md) | Dec 11, 2018 | 17763.194 | Patch now | 23 | 2 |

Showing the newest 100 of 103 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