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Description

Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.

PUBLISHED Reserved 2026-05-12 | Published 2026-06-09 | Updated 2026-06-10 | Assigner microsoft




LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

Problem types

CWE-693: Protection Mechanism Failure

Product status

16.0.1 (custom) before https://aka.ms/OfficeSecurityReleases
affected

-
affected

16.0.0 (custom) before https://aka.ms/OfficeSecurityReleases
affected

-
affected

-
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45459 (Microsoft Excel Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-45459)

nvd.nist.gov (CVE-2026-45459)

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