CVE-2026-97740: microsoft 365_apps, microsoft microsoft_365, microsoft office_2021

CVSS 6.5 (medium) · published 2026-10-13

Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Affected products (NVD): microsoft 365_apps, microsoft microsoft_365, microsoft office_2021, microsoft office_2024, microsoft office_online_server

Fixed in (NVD): 16.0.10417.20228

Weakness: CWE-497

Source: NVD CVE-2026-97740

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97740

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