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CVE-2023-21715

Microsoft Publisher Security Feature Bypass Vulnerability

HIGH
7.3
CVSS Score
Published: February 14, 2023 at 07:33 PM UTC
Updated: August 19, 2026 at 05:35 PM UTC
1 product affected across 1 vendor365 Apps

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Severity
HIGH7.3
Exploitation
CISA KEV
Exploit prediction
EPSS 12%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score12.0%

EPSS (Exploit Prediction Scoring System) estimates a 12.0% chance this CVE is exploited in the wild within the next 30 days — higher than 96% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Feb 14, 2023
Remediation Due
Mar 7, 2023
1333 days overdue
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21715
https://nvd.nist.gov/vuln/detail/CVE-2023-21715

Description

Microsoft Publisher Security Feature Bypass Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

365 Apps· Microsoft
95%
16.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21715

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-863

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