[NEW] [high] Microsoft Developer Tools: Multiple Vulnerabilities
An attacker can exploit multiple vulnerabilities in Microsoft Visual Studio Code, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Microsoft .NET Framework, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025, Microsoft PowerShell, Microsoft Windows, Microsoft .NET, Microsoft Visual Studio 2022, and Microsoft Visual Studio 2026 to execute arbitrary code, elevate privileges, conduct a denial of service attack, disclose information, and bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities across developer tools and infrastructure products enable code execution, privilege escalation, denial-of-service, information disclosure, and security bypass.
- Who is affected
- Deployments of Visual Studio Code, Visual Studio 2022/2026, .NET Framework/.NET, PowerShell, and Windows Server 2012-2025.
- Urgency
- High severity affecting multiple critical platforms; widespread impact requires immediate coordinated patching.
- Action
- Apply patches for all eight CVEs (CVE-2026-70335, CVE-2026-69306, CVE-2026-69278, CVE-2026-70336, CVE-2026-47285, CVE-2026-69320, CVE-2026-59113, CVE-2026-58650) across all affected Microsoft products.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2761
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-2026-703350.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693060.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-692780.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-703360.59% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-472850.89% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 56% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693200.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-591130.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-586500.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-658100.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-628720.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in Microsoft .Net (August 12, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in Microsoft products (August 12, 2026)cert-fr-avis
- mediumGHSA-9mrh-pw7c-9mqm: Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerabilityghsa
- unknownNCSC-2026-0285 [1.00] [M/H] Vulnerabilities patched in Microsoft Developer Toolsncsc-nl
- highGHSA-vg44-h755-9hw7: Microsoft Security Advisory CVE-2026-62871 – .NET Elevation of Privilege Vulnerabilityghsa
- highGHSA-fx4q-gjrx-2jw6: Microsoft Security Advisory CVE-2026-62897 – .NET Remote Code Execution Vulnerabilityghsa
- highGHSA-gg8c-3338-xw2f: Microsoft Security Advisory CVE-2026-70354 – .NET Core Remote Code Execution Vulnerabilit…ghsa
- mediumGHSA-9mr8-pwpw-3j2w: Microsoft Security Advisory CVE-2026-62909 – .NET Elevation of Privilege Vulnerabilityghsa
- highGHSA-jqhp-238x-qhgf: Microsoft Security Advisory CVE-2026-62886 – .NET Elevation of Privilege Vulnerabilityghsa
- highGHSA-m93f-wj8c-rp8p: Microsoft Security Advisory CVE-2026-62901 – .NET Denial of Service Vulnerabilityghsa
- mediumGHSA-r6mh-95jw-g7qg: Microsoft Security Advisory CVE-2026-62899 – .NET Security Feature Bypass Vulnerabilityghsa
- highGHSA-c494-m2fq-59mx: Microsoft Security Advisory CVE-2026-62898 – .NET Information Disclosure Vulnerabilityghsa
Recent advisories for Microsoft Developer Tools
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.
- unknownNCSC-2026-0285 [1.00] [M/H] Vulnerabilities patched in Microsoft Developer Toolsncsc-nl · 2026-08-11
- high[UPDATE] [high] Microsoft Developer Tools: Multiple Vulnerabilitiescert-bund · 2026-07-28
- unknownNCSC-2026-0235 [1.00] [M/H] Vulnerabilities fixed in Microsoft Developer Toolsncsc-nl · 2026-07-14
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