Multiple vulnerabilities in Microsoft .Net (July 15, 2026)

unknownCVE-2026-50524 CVE-2026-50526 CVE-2026-47303 CVE-2026-50650 CVE-2026-50527 CVE-2026-50525

Multiple vulnerabilities have been discovered in Microsoft .Net. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service.

CSIRTS triage

vendor: Microsoft product: .Net Remote code execution Privilege escalation Denial of service

What: Multiple vulnerabilities allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service.
Who is affected: Deployments of Microsoft .Net are affected.
Urgency: Remediation is urgent due to the potential for remote code execution and denial of service.
Action: Apply patches as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-07-15
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0870/

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-2026-505240.63% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all scored CVEs.
Low exploitation riskCVE-2026-505260.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.
Low exploitation riskCVE-2026-473030.74% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all scored CVEs.
Low exploitation riskCVE-2026-506500.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-505270.84% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all scored CVEs.
Low exploitation riskCVE-2026-505250.60% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all scored CVEs.
Low exploitation riskCVE-2026-505280.55% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all scored CVEs.
Moderate exploitation riskCVE-2026-473021.0% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 60% of all scored CVEs.
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.
Low exploitation riskCVE-2026-506480.84% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50524	coverage & exploitation status	NVD · CVE.org
CVE-2026-50526	coverage & exploitation status	NVD · CVE.org
CVE-2026-47303	coverage & exploitation status	NVD · CVE.org
CVE-2026-50650	coverage & exploitation status	NVD · CVE.org
CVE-2026-50527	coverage & exploitation status	NVD · CVE.org
CVE-2026-50525	coverage & exploitation status	NVD · CVE.org
CVE-2026-50528	coverage & exploitation status	NVD · CVE.org
CVE-2026-47302	coverage & exploitation status	NVD · CVE.org
CVE-2026-50646	coverage & exploitation status	NVD · CVE.org
CVE-2026-50648	coverage & exploitation status	NVD · CVE.org
CVE-2026-56170	coverage & exploitation status	NVD · CVE.org
CVE-2026-50659	coverage & exploitation status	NVD · CVE.org
CVE-2026-47300	coverage & exploitation status	NVD · CVE.org
CVE-2026-57108	coverage & exploitation status	NVD · CVE.org
CVE-2026-50651	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Microsoft .Net

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.

highGHSA-6588-8gv4-xfgh: Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vul…ghsa · 2026-07-28
highGHSA-j8gr-8fp3-5q5h: Microsoft Security Advisory CVE-2026-56170 – .NET Denial of Service Vulnerabilityghsa · 2026-07-21
highGHSA-55jh-fwmh-39m4: Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerabilityghsa · 2026-07-21
highGHSA-8prm-248r-h957: Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerabilityghsa · 2026-07-21
highGHSA-2p3q-h3hg-jcqq: Microsoft Security Advisory CVE-2026-47303 – .NET Elevation of Privilege Vulnerabilityghsa · 2026-07-21
highGHSA-mmjf-rqrv-855v: Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerabilityghsa · 2026-07-21