High 7.3Known exploited (CISA KEV)Published Feb 14, 2023

CVE-2023-21715Microsoft Publisher Security Feature Bypass Vulnerability

Updated under an hour ago (Oct 27, 2026, 3:20 PM ET)

Does this affect you?

It affects Microsoft 365 Apps for Enterprise and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Feb 14, 2023; federal agencies had to remediate by Mar 7, 2023. Treat that date as your deadline.

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Exploited in the last 30 days

Microsoft Publisher Security Feature Bypass Vulnerability

CVSS: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weakness (CWE): CWE-863
Known exploited: Added to CISA KEV Feb 14, 2023; federal remediation due Mar 7, 2023Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 12.01% (percentile 96)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Aug 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft Microsoft 365 Apps for Enterprise microsoft:365_apps_for_enterprise (from the name)	from 16.0.1 before https://aka.ms/OfficeSecurityReleases	CNA record
microsoft 365_apps microsoft:365_apps	all versions	NVD

References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715	vendor-advisory, patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21715	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.