Advisoriesby IbisMicrosoftCVE-2026-81964
Microsoft Windows Update Orchestrator Service: hard-coded credentials
Fix: upgrade to 10.0.19044.7807 or later (9 fixed versions below)
Use of hard-coded credentials in Windows Update Orchestrator Service allows an authorized attacker to bypass a security feature locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Windows 10 Version 21H2 Product | >= 10.0.19044.0, < 10.0.19044.7807 | 10.0.19044.7807 |
| Windows 10 Version 22H2 Product | >= 10.0.19045.0, < 10.0.19045.7807 | 10.0.19045.7807 |
| Windows 11 Version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7652 | 10.0.22631.7652 |
| Windows 11 Version 24H2 Product | >= 10.0.26100.0, < 10.0.26100.9711 | 10.0.26100.9711 |
| Windows 11 Version 25H2 Product | >= 10.0.26200.0, < 10.0.26200.9711 | 10.0.26200.9711 |
| Windows 11 Version 26H2 Product | >= 10.0.26300.0, < 10.0.26300.9711 | 10.0.26300.9711 |
| Windows 11 version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7652 | 10.0.22631.7652 |
| Windows 11 version 26H1 Product | >= 10.0.28000.0, < 10.0.28000.3231 | 10.0.28000.3231 |
| Windows Server 2022 Product | >= 10.0.20348.0, < 10.0.20348.5761 | 10.0.20348.5761 |
| Windows Server 2025 Product | >= 10.0.26100.0, < 10.0.26100.33650 | 10.0.26100.33650 |
| Windows Server 2025 (Server Core installation) Product | >= 10.0.26100.0, < 10.0.26100.33650 | 10.0.26100.33650 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-798