CVE-2023-21715
Microsoft Office Publisher Security Feature Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 7 March 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Microsoft Publisher Security Feature Bypass Vulnerability
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 12.01% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 14 February 2023 · due 7 March 2023
- Weakness
- CWE-863
- Affected
- microsoft/365 apps
- Source
- secure@microsoft.com
EPSS 12.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21715; https://nvd.nist.gov/vuln/detail/CVE-2023-21715
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21715Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21715US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.