QID 375737

Date Published: 2021-07-21

QID 375737: Microsoft Edge Based On Chromium Prior to 91.0.864.71 Multiple Vulnerabilities

Microsoft Edge is a cross-platform web browser developed by Microsoft.

CVE-2021-30564 Heap buffer overflow in WebXR.
CVE-2021-30563 Type Confusion in V8.
CVE-2021-30562 Use after free in WebSerial.
CVE-2021-30561 Type Confusion in V8.
CVE-2021-30560 Use after free in Blink XSLT.
CVE-2021-30541 Use after free in V8.
CVE-2021-30559 Out of bounds write in ANGLE
Affected Versions:
Microsoft Edge Based On Chromium versions before 91.0.864.71

QID Detection Logic: (authenticated)
Operating System: Windows
The install path is checked via registry "HKLM\SOFTWARE\Clients\StartMenuInternet\Microsoft Edge\shell\open\command". The version is checked via file msedge.exe.

Operating System: MacOS
The QID checks for the version of Microsoft Edge Based On Chromium app.

Successful exploitation of these vulnerabilities may allow an low privileged attacker to elevate their privileges or bypass secure boot and load untrusted software to the target system.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Customers are advised to upgrade to version 91.0.864.71 or later
    Vendor References

    CVEs related to QID 375737

    CVE-2021-30541 | CVE-2021-30559 | CVE-2021-30560 | CVE-2021-30561 | CVE-2021-30562 | CVE-2021-30563 | CVE-2021-30564 |
    Software Advisories
    Advisory ID Software Component Link
    Version 91.0.864.71 URL Logo docs.microsoft.com/en-us/deployedge/microsoft-edge-relnote-stable-channel#version-91086471-july-19
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