Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.
The CVSS severity warrants an early asset and exposure review.
Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.
Confirm exposure before applying a vendor-supported change.
Confirm that Microsoft Microsoft 365 Copilot, 365 copilot and an affected version are present.
Combine exploitation signals with asset exposure and business criticality.
Follow the vendor advisory or supported update path and preserve rollback options.
Recheck the version, service health, access paths, and relevant logs.
