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Microsoft Edge Remote Code Execution Vulnerability

unknownCVE-2026-50521

CSIRTS triage

What
A remote code execution vulnerability exists in Microsoft Edge.
Who is affected
Users of Microsoft Edge, specifics not detailed in the advisory.
Urgency
Remediation is urgent due to the potential for remote code execution.
Action
Apply the latest security updates for Microsoft Edge.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
HKCERT Security Bulletins (HK · national-cert · site)
Severity
unknown
Published
2026-06-29
Exploitation
Not in CISA KEV at last sync

Original advisory: https://www.hkcert.org/security-bulletin/microsoft-edge-remote-code-execution-vulnerability_20260629

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-50521coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Microsoft Edge Remote

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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