CVE-2026-88154: microsoft 365_apps, microsoft microsoft_365, microsoft office_2021

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

Out-of-bounds read 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

Weakness: CWE-125

Source: NVD CVE-2026-88154

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88154

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