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VULNERABILITIES

CVE-2026-45459 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:3.3 LOWVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45459 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-693Protection Mechanism Failure[email protected]

Affected Products

ProductVersions
microsoft 365 apps
All versions

CPE

  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*

Remediation

  • No remediation found in references.
microsoft microsoft 365
All versions

CPE

  • cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*

Remediation

  • No remediation found in references.
microsoft office 2021
All versions

CPE

  • cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*

Remediation

  • No remediation found in references.
microsoft office 2024
All versions

CPE

  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-45459
NVD Published Date:
Jun 9, 2026
NVD Last Modified:
Jul 23, 2026
Source:
[email protected]
CVE-2026-45459 Details - Not Deferred