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

Mariner

Read the vendor bulletin Get alerts for azl3 php 8.3.33-1 on Azure Linux

MediumCVSS not listedMedium severity

Scope

What the vendor says is affected

azl3 php 8.3.33-1 on Azure Linux 3.0

Next step

What the vendor recommends

Release Notes

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Timeline

When this advisory changed

Oct 1, 2026 at 1:08 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 2, 2026 at 12:40 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Oct 3, 2026 at 6:55 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-17545View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-17545
Last source check: Oct 3, 2026 at 1:00 PM UTC

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Watch azl3 php 8.3.33-1 on Azure Linux

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What the vendor says is affected

What the vendor recommends

When this advisory changed

CVEs named in this advisory

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