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Microsoft Security Response CenterCVE-2026-70351

Microsoft WebP Image Extension Remote Code Execution Vulnerability

Integer overflow or wraparound in Microsoft WebP Image Extension allows an unauthorized attacker to execute code over a network.

Read the vendor bulletin Get alerts for WebP Image Extension
8.8CVSS out of 10Critical severity
Scope

What the vendor says is affected

  • WebP Image Extension

Versions the vendor lists as fixed

  • 1.2.31.0
Next step

What the vendor recommends

Release Note

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. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-70351View CVSS, KEV, EPSS, and threat context
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