CVE-2026-62902
published 2026-08-11CVE-2026-62902: Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
PriorityP337medium6.5CVSS 3.1
AVNACLPRNUIRSUCHINAN
EPSS
0.78%
53.4th percentile
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_visual_studio_2022_version_17.14 | >= 17.14.0 < 17.14.38 | 17.14.38 |
| microsoft | microsoft_visual_studio_2026_version_18.8 | >= 18.0 < 18.8.3 | 18.8.3 |
| microsoft | net | >= 8.0.0 < 8.0.30 | 8.0.30 |
| microsoft | net | >= 9.0.0 < 9.0.19 | 9.0.19 |
| microsoft | net_8.0 | >= 8.0.0 < 8.0.30 | 8.0.30 |
| microsoft | net_9.0 | >= 9.0.0 < 9.0.19 | 9.0.19 |
| microsoft | visual_studio_2022 | >= 17.14.0 < 17.14.38 | 17.14.38 |
| microsoft | visual_studio_2026 | >= 18.8.0 < 18.8.3 | 18.8.3 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
ghsa6.5MEDIUM
vendor_redhat6.5MEDIUM
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VulDB
Microsoft .NET/Visual Studio improper authorization (WID-SEC-2026-2761)
vuldb·2026-08-15·CVSS 6.5
CVE-2026-62902 [MEDIUM] Microsoft .NET/Visual Studio improper authorization (WID-SEC-2026-2761)
A vulnerability classified as problematic was found in Microsoft .NET and Visual Studio. Affected is an unknown function. Such manipulation leads to improper authorization.
This vulnerability is referenced as CVE-2026-62902. It is possible to launch the attack remotely. No exploit is available.
Applying a patch is advised to resolve this issue.
GHSA
Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerability
ghsa·2026-08-11·CVSS 6.5
CVE-2026-62902 [MEDIUM] CWE-693 Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerability
Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerability
## Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in Windows Presentation Foundation. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A specially crafted document parsed in .NET can trigger the inclusion of functionality from an untrusted control sphere, allowing an unauthorized attacker to disclose information over a network.
## Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/433
## CVSS Details
- **Version:** 3.1
- **Severity:** Medium
- **Score:** 6.5
- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N
Red Hat
dotnet: .NET: Information Disclosure Vulnerability
vendor_redhat·2026-08-11·CVSS 6.5
CVE-2026-62902 [MEDIUM] CWE-829 dotnet: .NET: Information Disclosure Vulnerability
dotnet: .NET: Information Disclosure Vulnerability
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
A flaw was found in .NET. This vulnerability allows an unauthorized attacker to disclose sensitive information over a network. The issue arises from the inclusion of functionality from an untrusted control sphere, which can be exploited to reveal data.
Statement: Red Hat has determined that shipped versions of .NET in Red Hat products already include the fix for this vulnerability. The .NET 8.0 (8.0.30), 9.0 (9.0.19), and 10.0 (10.0.11) runtime fix versions are included in current Red Hat packages. Furthermore, the upstream advisory identifies only Microsoft.WindowsDesktop.App.Runtime (Windows Desktop)
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - August 2026
blogs_rapid7·2026-08-11·CVSS 7.2
CVE-2026-68821 [HIGH] Patch Tuesday - August 2026
Microsoft is publishing 421 vulnerabilities on August 2026 Patch Tuesday , including 236 vulnerabilities in Windows. This is lower volume than last month’s record-breaking behemoth, but still one of the largest Patch Tuesday totals ever. There is no reason to suppose that Patch Tuesday will ever return to the lower volumes we saw prior to 2026. Microsoft is aware of exploitation in the wild for one of the vulnerabilities published today, as well as public disclosure for two others, although the Notable CVEs section of the Security Update Guide omits one of these. As usual, browser vulns are not included in the Patch Tuesday count above, but unusually, Microsoft does not appear to have published any desktop browser security patches so far this month.
## Summary charts
## Summary tables
#
Sans Isc
Microsoft Patch Tuesday August 2026, (Tue, Aug 11th)
blogs_sans_isc·2026-08-11·CVSS 7.8
CVE-2026-68820 [HIGH] Microsoft Patch Tuesday August 2026, (Tue, Aug 11th)
Microsoft Patch Tuesday August 2026
Published: 2026-08-11. Last Updated: 2026-08-11 17:54:49 UTC
by Renato Marinho (Version: 1)
0 comment(s)
This month we got patches for 418 vulnerabilities. Of these, 62 are critical, 1 is being exploited in the wild, and 2 were publicly disclosed as zero-days. Notable fixes include Windows privilege escalation, container tampering, and critical QUIC and DNS Server remote code execution bugs.
A few vulnerabilities worth mentioning:
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability (CVE-2026-68820)
This Important-severity elevation of privilege vulnerability is listed by Microsoft as exploited in the wild but not publicly disclosed, and it has a CVSS score of 7.0. The flaw is a use-after-free issue in the Windows Ancil
Bugzilla
CVE-2026-62902 dotnet: .NET: Information Disclosure Vulnerability
bugzilla·2026-08-11·CVSS 6.5
CVE-2026-62902 [MEDIUM] CVE-2026-62902 dotnet: .NET: Information Disclosure Vulnerability
CVE-2026-62902 dotnet: .NET: Information Disclosure Vulnerability
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
2026-08-11
Published