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Microsoft Security Response CenterCVE-2025-66442

In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption) that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also affected.

Mariner

Read the vendor bulletin Get alerts for azl3 qemu 10.1.0-1 on Azure Linux
5.1CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 qemu 10.1.0-1 on Azure Linux 3.0
Next step

What the vendor recommends

See the Microsoft Security Update Guide for the update that applies to your product.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2025-66442View CVSS, KEV, EPSS, and threat context
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