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CVE-2023-23397: Microsoft Office

EPSS97.1%No. 303 of 1739 in KEV
CVE year2023listed the same year
Same vendor in KEV389
Same product29
FieldValue
VendorMicrosoft
ProductOffice
NameMicrosoft Office Outlook Privilege Escalation Vulnerability
Added to KEV2023-03-14
US federal due date2023-04-04
Ransomware useUnknown
CWECWE-294

CISA description

Microsoft Office Outlook contains a privilege escalation vulnerability that allows for a NTLM Relay attack against another service to authenticate as the user.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2009-0238Microsoft Office2026-04-1443.2%Unknown
CVE-2026-21514Microsoft Office2026-02-101.6%Unknown
CVE-2026-21509Microsoft Office2026-01-2670.7%Unknown
CVE-2009-0556Microsoft Office2026-01-0767.3%Unknown
CVE-2007-0671Microsoft Office2025-08-1243.2%Unknown
CVE-2023-21715Microsoft Office2023-02-1412.0%Unknown
CVE-2013-1331Microsoft Office2022-06-0879.8%Unknown
CVE-2009-0563Microsoft Office2022-06-0862.8%Unknown
CVE-2009-0557Microsoft Office2022-06-0853.0%Unknown
CVE-2021-38646Microsoft Office2022-03-287.9%Known
CVE-2015-1770Microsoft Office2022-03-2834.9%Unknown
CVE-2017-11826Microsoft Office2022-03-0381.1%Unknown
CVE-2017-0261Microsoft Office2022-03-0378.1%Unknown
CVE-2016-7193Microsoft Office2022-03-0357.5%Unknown
CVE-2015-2545Microsoft Office2022-03-0385.9%Unknown

NVD — CVE-2023-23397

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Microsoft Office vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2023-03-14.