Use-after-free of a server-side SSLContext when sni_callback switches contexts

Mariner

Read the vendor bulletin Get alerts for azl3 python3 3.12.14-2 on Azure Linux

CriticalCVSS not listedCritical severity

Scope

What the vendor says is affected

azl3 python3 3.12.14-2 on Azure Linux 3.0

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What the vendor recommends

Release Notes

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Timeline

When this advisory changed

Oct 3, 2026 at 1:42 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 4, 2026 at 7:15 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-19445View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-19445
Last source check: Oct 4, 2026 at 7:15 AM UTC

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What the vendor says is affected

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CVEs named in this advisory

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