CVE-2026-42837
Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.
CSIRTS triage
- What
- Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.
- Who is affected
- Authorized users of Windows Projected File System.
- Urgency
- Remediation is urgent due to the high severity of the vulnerability.
- Action
- Install the latest security update from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-42837
Get an email if CVE-2026-42837 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-42837: Windows Projected File System Elevation of Privilege Vulnerabilitymsrc · 2026-06-09
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-42837)