CVE-2026-42915
Incorrect calculation of buffer size in Windows VMSwitch allows an authorized attacker to deny service locally.
CSIRTS triage
- What
- A denial of service vulnerability exists due to incorrect buffer size calculations in Windows VMSwitch.
- Who is affected
- Authorized users of Microsoft Windows VMSwitch.
- Urgency
- Remediation is medium urgency due to moderate severity and no current exploitation reported.
- Action
- Apply the latest security updates for Windows VMSwitch.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2026-42915: Microsoft Windows VMSwitch Denial of Service Vulnerabilitymsrc · 2026-06-09
External references
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