What’s Vulnerable › Vulnerabilities

CVE-2023-21715: Microsoft Publisher Security Feature Bypass Vulnerability

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2023-02-14
• EPSS: 12.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-14 · updated 2026-08-19
• Weakness: CWE-863

Description

Microsoft Publisher Security Feature Bypass Vulnerability

Affected products

• Microsoft 365 Apps: all versions
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21715

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