PatchTheCVE365 copilot chat vulnerabilities and fixes
Recent CVEs affecting 365 copilot chat, with upgrade or downgrade steps. 2 tracked.
Also searched as: 365copilotchat.
365 copilot chat has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-05-07. Highest priority: CVE-2026-26129 (score 53/100).
- CVE-2026-26129 HIGH 7.5 MITIGATE Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an
- CVE-2026-26164 HIGH 7.5 MITIGATE Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an
FAQ
How do I fix 365 copilot chat 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 chat being exploited right now?
None of the tracked 365 copilot chat CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which 365 copilot chat CVE should I patch first?
CVE-2026-26129 currently ranks highest (53/100): Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an .