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CVE-2026-62724: Windows Telephony Service Privilege Elevation Vulnerability
CVE-2026-62724 · published 2 months ago
Summary
An attacker with authorized access can exploit this vulnerability to gain higher-level access on a Windows system. This means they could potentially take control of the system or install malicious software without being detected. To protect your system, ensure you have the latest Windows updates installed.
What to do
- Update microsoft windows 10 version 1607 to version 10.0.14393.9418 or later.
- Update microsoft windows 10 version 21h2 to version 10.0.19044.7663 or later.
- Update microsoft windows 10 version 22h2 to version 10.0.19045.7663 or later.
- Update microsoft windows 11 version 23h2 to version 10.0.22631.7517 or later.
- Update microsoft windows 11 version 24h2 to version 10.0.26100.9168 or later.
- Update microsoft windows 11 version 25h2 to version 10.0.26200.9168 or later.
- Update microsoft windows 11 version 26h1 to version 10.0.28000.2704 or later.
- Update microsoft windows server 2016 to version 10.0.14393.9418 or later.
- Update microsoft windows server 2016 (server core installation) to version 10.0.14393.9418 or later.
- Update microsoft windows server 2022 to version 10.0.20348.5499 or later.
- Update microsoft windows server 2025 to version 10.0.26100.33296 or later.
- Update microsoft windows server 2025 (server core installation) to version 10.0.26100.33296 or later.
- Update microsoft windows_10_1607 to version 10.0.14393.9418 or later.
- Update microsoft windows_10_1809 to version 10.0.17763.9121 or later.
- Update microsoft windows_10_21h2 to version 10.0.19044.7663 or later.
- Update microsoft windows_10_22h2 to version 10.0.19045.7663 or later.
- Update microsoft windows_11_23h2 to version 10.0.22631.7517 or later.
- Update microsoft windows_11_24h2 to version 10.0.26100.9106 or later.
- Update microsoft windows_11_25h2 to version 10.0.26200.9106 or later.
- Update microsoft windows_11_26h1 to version 10.0.28000.2704 or later.
- Update microsoft windows_server_2016 to version 10.0.14393.9418 or later.
- Update microsoft windows_server_2019 to version 10.0.17763.9121 or later.
- Update microsoft windows_server_2022 to version 10.0.20348.5440 or later.
- Update microsoft windows_server_2025 to version 10.0.26100.33222 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows 10 version 1607 | < 10.0.14393.9418 |
| microsoft | windows 10 version 1809 |
< 10.0.17763.9115 < 10.0.17763.9121 |
| microsoft | windows 10 version 21h2 | < 10.0.19044.7663 |
| microsoft | windows 10 version 22h2 | < 10.0.19045.7663 |
| microsoft | windows 11 version 23h2 | < 10.0.22631.7517 |
| microsoft | windows 11 version 24h2 | < 10.0.26100.9168 |
| microsoft | windows 11 version 25h2 | < 10.0.26200.9168 |
| microsoft | windows 11 version 26h1 | < 10.0.28000.2704 |
| microsoft | windows server 2012 |
< 6.2.9200.26279 < 6.2.9200.26280 |
| microsoft | windows server 2012 (server core installation) |
< 6.2.9200.26279 < 6.2.9200.26280 |
| microsoft | windows server 2012 r2 |
< 6.3.9600.23337 < 6.3.9600.23338 |
| microsoft | windows server 2012 r2 (server core installation) |
< 6.3.9600.23337 < 6.3.9600.23338 |
| microsoft | windows server 2016 | < 10.0.14393.9418 |
| microsoft | windows server 2016 (server core installation) | < 10.0.14393.9418 |
| microsoft | windows server 2019 |
< 10.0.17763.9115 < 10.0.17763.9121 |
| microsoft | windows server 2019 (server core installation) |
< 10.0.17763.9115 < 10.0.17763.9121 |
| microsoft | windows server 2022 | < 10.0.20348.5499 |
| microsoft | windows server 2025 | < 10.0.26100.33296 |
| microsoft | windows server 2025 (server core installation) | < 10.0.26100.33296 |
| microsoft | windows_10_1607 |
< 10.0.14393.9418 cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* |
| microsoft | windows_10_1809 |
< 10.0.17763.9121 cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
| microsoft | windows_10_21h2 |
< 10.0.19044.7663 cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_10_22h2 |
< 10.0.19045.7663 cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_23h2 |
< 10.0.22631.7517 cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_24h2 |
< 10.0.26100.9106 cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_25h2 |
< 10.0.26200.9106 cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_26h1 |
< 10.0.28000.2704 cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* |
| microsoft | windows_server_2012 |
r2 cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* |
| microsoft | windows_server_2016 |
< 10.0.14393.9418 cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2019 |
< 10.0.17763.9121 cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2022 |
< 10.0.20348.5440 cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2025 |
< 10.0.26100.33222 cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* |
Original advisory text
Windows Telephony Service Elevation of Privilege Vulnerability
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62724 vendor-advisory patch
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Type
CWE-416Use After Free
Timeline
Published11 Aug 2026
Updated4 Nov 2026
First seen11 Aug 2026
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