CVE-2026-48561: Microsoft Edge Copilot Remote Code Execution Vulnerability

unknownCVE-2026-48561

Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoft product: Copilot Remote code execution

What: An unauthorized attacker can execute code over a network due to improper neutralization of special elements used in a command.
Who is affected: Deployments of Microsoft Copilot are affected.
Urgency: Remediation is urgent due to the critical severity and potential for remote code execution.
Action: Apply the latest security patch for Microsoft Copilot.

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

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48561

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.

Low exploitation riskCVE-2026-485610.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-48561	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[NEW] [high] Microsoft Windows Terminal and 365 Copilot: Multiple Vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Microsoft Office (July 15, 2026)cert-fr-avis
criticalCVE-2026-48561: Improper neutralization of special elements used in a command ('command injection') in Microso…nvd