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Griffin Technology PartnersGTP
HighCVE-2026-66798active

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Published August 28, 2026Updated August 28, 2026

Source data

Overview

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Impact & technical details

Remote Code Execution

According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution? This attack requires a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.

According to the CVSS metrics, successful exploitation of this vulnerability could lead to no loss of confidentiality (C:N) and integrity (I:N), but could lead to some loss of availability (A:L). What does that mean for this vulnerability? While we cannot rule out the impact to Confidentiality, Integrity, and Availability, the ability to exploit this vulnerability by itself is limited. An attacker would need to combine this with other vulnerabilities to perform an attack.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? The user must visit the attacker‑controlled webpage, and perform the two tap gestures that cause autofill to activate.

What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 152.0.4191.53 08/28/2026 152.0.7977.64/.65

CVSS base score
4.3 / 10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

  • Microsoft Edge (Chromium-based)
  • Microsoft Edge for Android
  • Microsoft Edge for Linux
  • Microsoft Edge for MAC
  • Microsoft Edge for Windows
  • Microsoft Edge for iOS

Source guidance

Remediation

  • Release Notes

Patch availability is not confirmed by this dataset. Consult the vendor before selecting a remediation.

GTP recommendation · Rule-based guidance

Recommended next step

Review affected Microsoft products and apply the applicable security updates through your organization's normal patch-management process. Confirm availability and prerequisites in the Microsoft advisory.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

Managed by GTP?

Griffin Technology Partners managed customers may receive additional environment-specific security guidance and remediation assistance through their managed services relationship.

Security bulletins are provided for informational purposes and compiled from authoritative public sources. Vulnerability applicability varies by environment. Validate affected products, configuration, compatibility requirements, and vendor guidance before making production changes.