Security Updates for Microsoft Visual Studio Products (May 2026)

high Nessus Plugin ID 314647

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Synopsis

The Microsoft Visual Studio Products are affected by multiple vulnerabilities.

Description

The Microsoft Visual Studio Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

- Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally. (CVE-2026-32177)

- A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories. To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system. The security update fixes the vulnerability by ensuring .NET Core properly handles files. (CVE-2026-32175)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address this issue:
- Update to 15.9.80 for Visual Studio 2017 15.9
- Update to 16.11.56 for Visual Studio 2019 16.11
- Update to 17.12.20 for Visual Studio 2022 17.12
- Update to 17.14.31 for Visual Studio 2022 17.14
- Update to 18.5.3 for Visual Studio 2026 18.5

Plugin Details

Severity: High

ID: 314647

File Name: smb_nt_ms26_may_visual_studio.nasl

Version: 1.3

Type: Local

Agent: windows

Family: Windows : Microsoft Bulletins

Published: 5/14/2026

Updated: 5/15/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:P

CVSS Score Source: CVE-2026-32177

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:visual_studio

Required KB Items: SMB/MS_Bulletin_Checks/Possible, installed_sw/Microsoft Visual Studio, SMB/Registry/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-32175, CVE-2026-32177

IAVA: 2026-A-0460, 2026-A-0463, 2026-A-0474

Detections

Analytics