Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 22, 2026 · NIST NVD

   Detected

   Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

2. Jul 23, 2026 · NIST NVD

   Updated

   Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Affected

• cpe microsoft/365 copilotversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-42827

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-42827

  Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com