Advisoriesby IbisMicrosoftCVE-2026-62726
Microsoft Windows Telephony Service: use after free
Fix: upgrade to 10.0.14393.9418 or later (10 fixed versions below)
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Windows 10 Version 1607 Product | >= 10.0.14393.0, < 10.0.14393.9418 | 10.0.14393.9418 |
| Windows 10 Version 1809 Product | >= 10.0.17763.0, < 10.0.17763.9121 | 10.0.17763.9121 |
| Windows 10 Version 21H2 Product | >= 10.0.19044.0, < 10.0.19044.7663 | 10.0.19044.7663 |
| Windows 10 Version 22H2 Product | >= 10.0.19045.0, < 10.0.19045.7663 | 10.0.19045.7663 |
| Windows 11 Version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7517 | 10.0.22631.7517 |
| Windows 11 Version 24H2 Product | >= 10.0.26100.0, < 10.0.26100.9168 | 10.0.26100.9168 |
| Windows 11 Version 25H2 Product | >= 10.0.26200.0, < 10.0.26200.9168 | 10.0.26200.9168 |
| Windows 11 version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7517 | 10.0.22631.7517 |
| Windows 11 version 26H1 Product | >= 10.0.28000.0, < 10.0.28000.2704 | 10.0.28000.2704 |
| Windows Server 2012 Product | >= 6.2.9200.0, < 6.2.9200.26280 | 6.2.9200.26280 |
| Windows Server 2012 (Server Core installation) Product | >= 6.2.9200.0, < 6.2.9200.26280 | 6.2.9200.26280 |
| Windows Server 2012 R2 Product | >= 6.3.9600.0, < 6.3.9600.23338 | 6.3.9600.23338 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-416