PatchTheCVE365 copilot vulnerabilities and fixes
Recent CVEs affecting 365 copilot, with upgrade or downgrade steps. 1 tracked.
Also searched as: 365copilot.
365 copilot has 1 tracked vulnerability, 1 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-07-24. Highest priority: CVE-2026-50517 (score 59/100).
- CVE-2026-50517 CRITICAL 9.9 MITIGATE Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network
FAQ
How do I fix 365 copilot vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is 365 copilot being exploited right now?
None of the tracked 365 copilot CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which 365 copilot CVE should I patch first?
CVE-2026-50517 currently ranks highest (59/100): Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.