Multiple vulnerabilities in Microsoft products (July 15, 2026)
Multiple vulnerabilities have been discovered in Microsoft products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service. Microsoft states that the vulnerability...
CSIRTS triage
- What
- Multiple vulnerabilities allow remote arbitrary code execution, privilege escalation, and remote denial of service.
- Who is affected
- All deployments of affected Microsoft products.
- Urgency
- Remediation is urgent due to active exploitation and potential severity.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0872/
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-2026-550300.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
- Low exploitation riskCVE-2026-551340.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all scored CVEs.
- Low exploitation riskCVE-2026-550200.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.
- Low exploitation riskCVE-2026-456460.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.
- Low exploitation riskCVE-2026-506570.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all scored CVEs.
- 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-2026-551300.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all scored CVEs.
- Low exploitation riskCVE-2026-551420.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
- Moderate exploitation riskCVE-2026-559441.3% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 67% of all scored CVEs.
- Low exploitation riskCVE-2026-550020.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.
Referenced CVEs
+12 more CVEs referenced in this advisory.
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownexploitedSecurity Alert: [Updated] Microsoft Releases July 2026 Security Updatesjpcert
- criticalexploitedMicrosoft security advisory – July 2026 monthly rollup (AV26-698) – Update 3cccs
- high[NEW] [high] Microsoft DeveloperTools: Multiple vulnerabilitiescert-bund
- critical[NEW] [critical] Microsoft Office products: Multiple vulnerabilitiescert-bund
- criticalexploited2026-009: Critical Vulnerabilities in Microsoft SharePointcert-eu
- highexploitedCISA Adds Two Known Exploited Vulnerabilities to Catalogcisa
- criticalexploitedCVE-2026-50522: Microsoft SharePoint Deserialization of Untrusted Data Vulnerabilitycisa-kev
- unknownexploitedMultiple vulnerabilities in Microsoft Sharepoint (July 22, 2026)cert-fr-alerte
- highGHSA-55jh-fwmh-39m4: Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerabilityghsa
- highGHSA-2p3q-h3hg-jcqq: Microsoft Security Advisory CVE-2026-47303 – .NET Elevation of Privilege Vulnerabilityghsa
- highGHSA-mmjf-rqrv-855v: Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerabilityghsa
- highGHSA-2969-4q4w-w5h3: Microsoft Security Advisory CVE-2026-50650 – .NET Elevation of Privilege Vulnerabilityghsa
Recent advisories for Microsoft products
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.
- critical[NEW] [critical] Microsoft Windows products: Multiple vulnerabilitiescert-bund · 2026-07-27
- critical[NEW] [critical] Microsoft Office products: Multiple vulnerabilitiescert-bund · 2026-07-23
- unknownMultiple vulnerabilities in Microsoft products (July 17, 2026)cert-fr-avis · 2026-07-17
- critical[UPDATE] [critical] Microsoft Windows products: Multiple vulnerabilitiescert-bund · 2026-07-09
- unknownMultiple Vulnerabilities in Microsoft Products (June 22, 2026)cert-fr-avis · 2026-06-22
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