CVE-2026-50526: .NET Tampering Vulnerability
Vulnerability summary
CVE-2026-50526 is a high (CVSS 7.0) vulnerability in microsoft microsoft visual studio 2022 version 17.12. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 1Timeline
- 14-07-2026PublishedVulnerability first disclosed.
- 01-11-2026Last modifiedVulnerability information updated.
Description
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NDiffers
- OSV · NugetEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NDiffers
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NDiffers
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-59Improper Link Resolution Before File AccessThe product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
- CWE-345Insufficient Verification of Data AuthenticityThe product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Microsoft9 products
- microsoft visual studio 2022 version 17.12≥ 17.12.0, < 17.12.22
- microsoft visual studio 2022 version 17.14≥ 17.14.0, < 17.14.36
- microsoft visual studio 2026 version 18.7≥ 18.0, < 18.7.4
- .net≥ 8.0.0, < 8.0.29 | ≥ 9.0.0, < 9.0.18 | ≥ 10.0.0, < 10.0.6
- .net 10.0 runtime≥ 10.0.0, < 10.0.10
Ubuntu4 products
- dotnet10< 10.0.110-10.0.10-0ubuntu1~24.04.1 | < 10.0.110-10.0.10-0ubuntu1~26.04.1
- dotnet6All versions (No fix recorded)
- dotnet7All versions (No fix recorded)
- dotnet8< 8.0.129-8.0.29-0ubuntu1~22.04.1 | < 8.0.129-8.0.29-0ubuntu1~24.04.1
Alpine3 products
- dotnet10-runtime< 10.0.10-r0
- dotnet8-runtime< 8.0.29-r0
- dotnet9-runtime< 9.0.18-r0
NuGet1 product
- Microsoft.NET.Build.Containers≥ 10.0.0, < 10.0.10 | ≥ 9.0.0, < 9.0.18 | ≥ 8.0.0, < 8.0.29
4 vendors · 17 products
References
11 links
- github.com/dotnet/sdkPACKAGE