CVE-2026-50526
published 2026-07-14CVE-2026-50526: Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
PriorityP427medium5.5CVSS 3.1
AVLACLPRLUINSUCNIHAN
EPSS
0.23%
13.4th percentile
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_visual_studio_2022_version_17.12 | >= 17.12.0 < 17.12.22 | 17.12.22 |
| microsoft | microsoft_visual_studio_2022_version_17.14 | >= 17.14.0 < 17.14.36 | 17.14.36 |
| microsoft | microsoft_visual_studio_2026_version_18.7 | >= 18.0 < 18.7.4 | 18.7.4 |
| microsoft | net | >= 10.0.0 < 10.0.6 | 10.0.6 |
| microsoft | net | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | net | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | net_10.0 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | net_8.0 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | net_9.0 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | visual_studio_2022 | >= 17.12.0 < 17.12.22 | 17.12.22 |
| microsoft | visual_studio_2022 | >= 17.14.0 < 17.14.36 | 17.14.36 |
| microsoft | visual_studio_2026 | >= 18.7.0 < 18.7.4 | 18.7.4 |
| ubuntu | dotnet10 | — | — |
| ubuntu | dotnet8 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
ghsa7.0HIGH
vendor_ubuntu8.8HIGH
vendor_redhat7.0HIGH
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Ubuntu
.NET vulnerabilities
vendor_ubuntu·2026-07-15·CVSS 8.8
CVE-2026-57108 [HIGH] .NET vulnerabilities
Title: .NET vulnerabilities
Summary: Several security issues were fixed in .NET.
Artur Stetsko discovered that the .NET did not properly validate
authentication data. An attacker could possibly use this issue to elevate
privileges. (CVE-2026-47300)
Levi Broderick discovered that .NET did not properly handle XML encryption
during parsing. An attacker could possibly use this issue to consume
excessive resources, resulting in a denial of service. (CVE-2026-47302)
Pham Quang Minh discovered that .NET did not properly parse
authentication data. An attacker could possibly use this issue to bypass
authentication and elevate privileges. (CVE-2026-47303)
Levi Broderick discovered that .NET did not properly verify cryptographic
signatures during XML encryption. An attacker could possibly use th
Red Hat
dotnet: .NET: Local tampering via improper link resolution
vendor_redhat·2026-07-14·CVSS 7.0
CVE-2026-50526 [HIGH] CWE-59 dotnet: .NET: Local tampering via improper link resolution
dotnet: .NET: Local tampering via improper link resolution
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
A flaw was found in .NET. This vulnerability, stemming from improper link resolution before file access, allows an authorized local attacker to perform tampering. This could lead to unauthorized modification of data or system files.
Package: dotnet10.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet8.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet9.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet10.0 (Red Hat Enterprise Linux 8) - Affected
Package: dotnet8.0 (Red Hat Enterprise Linux 8) - Affected
Package: dotnet9.0 (Red Hat Enterprise Linux 8) - Affected
Package:
GHSA
Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability
ghsa·2026-07-21·CVSS 7.0
CVE-2026-50526 [HIGH] CWE-59 Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability
Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability
## Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET SDK (Microsoft.NET.Build.Containers). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A tampering vulnerability exists in the .NET SDK (.NET 8, .NET 9, and .NET 10) container image build process which could allow a local attacker to inject resources that could be incorporated into container images built by other users on the same machine.
## Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**
## CVSS Details
- **Version:** 3.1
- **Severity:** High
- **Score:**
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-50526 dotnet10.0: .NET: Local tampering via improper link resolution [fedora-all]
bugzilla·2026-07-16·CVSS 7.0
CVE-2026-50526 [HIGH] CVE-2026-50526 dotnet10.0: .NET: Local tampering via improper link resolution [fedora-all]
CVE-2026-50526 dotnet10.0: .NET: Local tampering via improper link resolution [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Bugzilla
CVE-2026-50526 dotnet9.0: .NET: Local tampering via improper link resolution [fedora-all]
bugzilla·2026-07-16·CVSS 7.0
CVE-2026-50526 [HIGH] CVE-2026-50526 dotnet9.0: .NET: Local tampering via improper link resolution [fedora-all]
CVE-2026-50526 dotnet9.0: .NET: Local tampering via improper link resolution [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Bugzilla
CVE-2026-50526 dotnet8.0: .NET: Local tampering via improper link resolution [fedora-all]
bugzilla·2026-07-16·CVSS 7.0
CVE-2026-50526 [HIGH] CVE-2026-50526 dotnet8.0: .NET: Local tampering via improper link resolution [fedora-all]
CVE-2026-50526 dotnet8.0: .NET: Local tampering via improper link resolution [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Bugzilla
CVE-2026-50526 dotnet: .NET: Local tampering via improper link resolution
bugzilla·2026-07-14·CVSS 7.0
CVE-2026-50526 [HIGH] CVE-2026-50526 dotnet: .NET: Local tampering via improper link resolution
CVE-2026-50526 dotnet: .NET: Local tampering via improper link resolution
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Rapid7
Patch Tuesday - July 2026
blogs_rapid7·2026-07-14·CVSS 9.6
CVE-2026-58617 [CRITICAL] Patch Tuesday - July 2026
Microsoft is publishing 622 vulnerabilities on July 2026 Patch Tuesday , including a record-breaking 416 Windows vulnerabilities. Microsoft is aware of exploitation in the wild for two of the vulnerabilities published today, both of which are listed on CISA KEV, as well as public disclosure for one other. As usual, browser vulns are not included in the Patch Tuesday count above. Rapid7 noted last month that Microsoft no longer enumerates Chromium CVEs in the Security Update Guide. However, Microsoft has now taken the pursuit of minimalism much further, since today’s Security Update Guide no longer lists out even Microsoft vulnerabilities! Instead, we now receive a summary table of vulnerability counts by product family, as well as a new slimline “Notable CVEs” section. All of this only ser
Sans Isc
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
blogs_sans_isc·2026-07-14·CVSS 6.1
CVE-2026-56155 [MEDIUM] Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here
Published: 2026-07-14. Last Updated: 2026-07-14 19:14:58 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This patch Tuesday includes a staggering 622 vulnerabilities, not including another 427 vulnerabilities in Chromium, affecting Microsoft's Edge browser. 62 of the vulnerabilities are rated critical. One was disclosed before today, and two have already been exploited.
Given the large number of vulnerabilities, it is difficult to point out "noteworthy" issues.
Already exploited vulnerabilities:
CVE-2026-56155 : Active Directory Federation Services Elevation of Privilege Vulnerability. This is an important (not critical) vulnerablity.
CVE-2026-56164: Microsoft SharePoint Server Elevation of Privilege Vulnerability. Micr
2026-07-14
Published