SB2026090701 - Multiple vulnerabilities in Microsoft Edge

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Main Vulnerability Database SB2026090701

SB2026090701 - Multiple vulnerabilities in Microsoft Edge

Published: September 7, 2026

Security Bulletin ID SB2026090701
CSH Severity
High
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 17% Medium 50% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2026-84359)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an information leak in Skia when rendering content. A remote attacker can trick the victim into opening crafted content to disclose sensitive information.

User interaction is required.


2) Improper privilege management (CVE-ID: CVE-2026-84358)

CWE-ID: CWE-269 - Improper Privilege Management

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper privilege management in Downloads when processing download-related actions. A remote attacker can induce the browser to perform crafted download-related operations to escalate privileges.

User interaction is required.


3) Input validation error (CVE-ID: CVE-2026-84357)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in Omnibox in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and execute arbitrary code on the system.


4) Spoofing attack (CVE-ID: CVE-2026-84356)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to spoof the user interface.

The vulnerability exists due to UI misrepresentation in FullScreen when rendering fullscreen content. A remote attacker can present crafted fullscreen content to spoof the user interface.

User interaction is required.


5) Improper access control (CVE-ID: CVE-2026-84355)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper access control in Navigation when handling navigation operations. A remote attacker can cause the browser to process crafted content to bypass authorization checks.

User interaction is required to trigger the issue.


6) Improper Authorization (CVE-ID: CVE-2026-84354)

CWE-ID: CWE-285 - Improper Authorization

CVSSv4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrect authorization in FileSystem in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and execute arbitrary code.


Remediation

Install update from vendor's website.

References