CVE-2026-50646: Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

highCVSS 7.8CVE-2026-50646

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.8
Published: 2026-07-14
Last updated: 2026-07-21
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-50646

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-506460.95% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 58% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50646	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] Microsoft DeveloperTools: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Microsoft .Net (July 15, 2026)cert-fr-avis
unknownNCSC-2026-0235 [1.00] [M/H] Vulnerabilities fixed in Microsoft Developer Toolsncsc-nl
highCVE-2026-50646: .NET Framework Remote Code Execution Vulnerabilitymsrc

Recent advisories for Protection mechanism failure

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-66391: Use of Insufficiently Random Values, Protection Mechanism Failure vulnerability in Apache Wick…nvd · 2026-07-27
mediumCVE-2026-56087: Dell ThinOS 10, versions prior to 2605_10.2100 contain a Protection Mechanism Failure vulnerab…nvd · 2026-07-15
highCVE-2026-47305: Protection mechanism failure in Visual Studio allows an unauthorized attacker to execute code …nvd · 2026-07-14
mediumCVE-2026-50661: Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a …nvd · 2026-07-14
mediumCVE-2026-34348: Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to…nvd · 2026-07-14
highCVE-2026-0278: Multiple protection mechanism failures in the Prisma Access Agent Data Loss Prevention (DLP) co…nvd · 2026-07-09