Vulnerabilities
CVE-2026-85885: Microsoft 365 Copilot Elevation of Privilege Vulnerability
An elevation of privilege vulnerability, tracked as CVE-2026-85885, has been identified in Microsoft 365 Copilot. The flaw stems from improper neutralization of special elements in commands, enabling an authorized attacker to escalate privileges remotely over the network. SecOps and administrators should apply the latest Microsoft updates to mitigate potential exploitation.
What Happened
A command injection vulnerability, designated as CVE-2026-85885, affects Microsoft 365 Copilot. The flaw exists due to the improper neutralization of special elements utilized within commands, allowing threat actors to manipulate inputs and execute unintended actions.
Impact
An authorized attacker who successfully exploits this vulnerability can achieve an elevation of privileges over a network. This could potentially allow the actor to gain higher-level permissions within the affected environment, increasing the risk of unauthorized access to sensitive data or resources managed by the service.
What to Do
Defenders, system administrators, and SecOps teams should take immediate action to secure their environments:
- Review official Microsoft security advisories and guidance regarding CVE-2026-85885.
- Apply the latest patches and updates provided by Microsoft for Microsoft 365 Copilot as soon as they become available.
- Monitor network and access logs for unusual privilege escalation attempts or anomalous command execution patterns associated with Copilot usage.
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