Search threats, CVEs… ⌘K
Back to vendor advisories
Microsoft Security Response CenterCVE-2026-58616

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.

Read the vendor bulletin Get alerts for Microsoft Edge (Chromium-based)
4.4CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • Microsoft Edge (Chromium-based)

Versions the vendor lists as fixed

  • 152.0.4191.53
Next step

What the vendor recommends

Release Notes

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-2026-58616View CVSS, KEV, EPSS, and threat context
Keep investigating
See every advisory from this vendor