CVE-2026-17545: PHP on Windows: Reserved Device Names Are Not Rejected Before File/Stream I/O which can cause DoS

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-10-01

Last Updated

2026-10-01

EPSS Score

0.32% (percentile: 22.9%)

Affected Products (1)

Other

• 21709-17084

Revision History

• 2026-10-01: Information published.
• 2026-10-01: Information published.