CVE-2026-50528
published 2026-07-14CVE-2026-50528: Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
PriorityP352high8.2CVSS 3.1
AVNACLPRNUINSUCLIHAN
EPSS
0.55%
43.8th percentile
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
Affected
50 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft.netcore.app.runtime.linux-arm | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-arm | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-arm | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.linux-arm64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-arm64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-arm64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-arm64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-x64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-x64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-musl-x64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.linux-x64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.linux-x64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.linux-x64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.osx-arm64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.osx-arm64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.osx-arm64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.osx-x64 | >= 10.0.0 < 10.0.10 | 10.0.10 |
| microsoft | microsoft.netcore.app.runtime.osx-x64 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | microsoft.netcore.app.runtime.osx-x64 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | microsoft.netcore.app.runtime.win-arm | >= 10.0.0 < 10.0.10 | 10.0.10 |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
ghsa8.2HIGH
vendor_ubuntu8.8HIGH
vendor_redhat8.2HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
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: Security feature bypass due to incorrect authorization
vendor_redhat·2026-07-14·CVSS 8.2
CVE-2026-50528 [HIGH] CWE-551 dotnet: .NET: Security feature bypass due to incorrect authorization
dotnet: .NET: Security feature bypass due to incorrect authorization
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
A flaw was found in .NET where incorrect authorization allows an unauthorized attacker to bypass a security feature over a network. This vulnerability enables an attacker to circumvent intended security controls, potentially leading to unauthorized access or actions within the affected system.
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
GHSA
Microsoft Security Advisory CVE-2026-50528 – .NET Security Feature Bypass Vulnerability
ghsa·2026-07-20·CVSS 8.2
CVE-2026-50528 [HIGH] CWE-302 Microsoft Security Advisory CVE-2026-50528 – .NET Security Feature Bypass Vulnerability
Microsoft Security Advisory CVE-2026-50528 – .NET Security Feature Bypass Vulnerability
## Executive summary
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET TLS/SSL (System.Net.Security). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A security feature bypass vulnerability exists in .NET 8, .NET 9, and .NET 10 when processing TLS/SSL connections. An attacker can exploit the SslStream implementation to bypass authorization checks during secure communication.
## Announcement
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**
## CVSS Details
- **Version:** 3.1
- **Severity:** High
- **Score:** 8.2
- **Vector:** `C
VulDB
Microsoft NET improper authorization
vuldb·2026-07-15·CVSS 8.2
CVE-2026-50528 [HIGH] Microsoft NET improper authorization
A vulnerability classified as critical has been found in Microsoft NET. Impacted is an unknown function. The manipulation leads to improper authorization.
This vulnerability is referenced as CVE-2026-50528. Remote exploitation of the attack is possible. No exploit is available.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-50528 dotnet10.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
bugzilla·2026-07-16·CVSS 8.2
CVE-2026-50528 [HIGH] CVE-2026-50528 dotnet10.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
CVE-2026-50528 dotnet10.0: .NET: Security feature bypass due to incorrect authorization [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.
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
Bugzilla
CVE-2026-50528 dotnet8.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
bugzilla·2026-07-16·CVSS 8.2
CVE-2026-50528 [HIGH] CVE-2026-50528 dotnet8.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
CVE-2026-50528 dotnet8.0: .NET: Security feature bypass due to incorrect authorization [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.
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
Bugzilla
CVE-2026-50528 dotnet9.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
bugzilla·2026-07-16·CVSS 8.2
CVE-2026-50528 [HIGH] CVE-2026-50528 dotnet9.0: .NET: Security feature bypass due to incorrect authorization [fedora-all]
CVE-2026-50528 dotnet9.0: .NET: Security feature bypass due to incorrect authorization [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.
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
Bugzilla
CVE-2026-50528 dotnet: .NET: Security feature bypass due to incorrect authorization
bugzilla·2026-07-14·CVSS 8.2
CVE-2026-50528 [HIGH] CVE-2026-50528 dotnet: .NET: Security feature bypass due to incorrect authorization
CVE-2026-50528 dotnet: .NET: Security feature bypass due to incorrect authorization
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
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