Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
History

Sat, 17 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 13 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
Title .NET Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
Weaknesses CWE-502
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft .net Framework
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T19:01:15.820Z

Updated: 2026-10-23T17:53:32.741Z

Reserved: 2026-08-31T15:57:21.155Z

Link: CVE-2026-83520

cve-icon Vulnrichment

Updated: 2026-10-13T20:40:50.313Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:19:57.933

Modified: 2026-10-22T22:18:48.310

Link: CVE-2026-83520

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-13T19:01:15Z

Links: CVE-2026-83520 - Bugzilla