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CVE-2023-21715

Microsoft Office Publisher Security Feature Bypass

7.3 HIGHActively exploited (CISA KEV)EPSS 12.0%
  1. Published14 Feb 2023
  2. Added to CISA KEV14 Feb 2023
  3. Remediation due7 Mar 2023
Actively exploited (CISA KEV)

Microsoft Office Publisher contains a security feature bypass vulnerability that allows for a local, authenticated attack on a targeted system.

Added to KEV: 14 Feb 2023Federal remediation due: 7 Mar 2023

Description

Microsoft Publisher Security Feature Bypass Vulnerability

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft 365 Appsall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-21715 being actively exploited?

Yes. CVE-2023-21715 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 14 Feb 2023.

How severe is CVE-2023-21715?

CVE-2023-21715 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 12.0% probability of exploitation.

Which products are affected by CVE-2023-21715?

Affected products include Microsoft 365 Apps.

How do I fix CVE-2023-21715?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-21715 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.