Is CVE-2023-33151 in the CISA KEV catalog?

No. CVE-2023-33151 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-33151?

CVE-2023-33151 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2023-33151?

CVE-2023-33151 has an EPSS score of 3.22% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-33151?

Install KB5002432 for Microsoft Outlook 2013. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2023-33151

MEDIUMEPSS 87th pctl

6.5

CVSS v3

NVD

Description

Microsoft Outlook Spoofing Vulnerability

How to fix

Remediation Available

Microsoft Outlook 2013Microsoft

Install:KB5002432Microsoft

Microsoft Outlook 2013 RT Service Pack 1Microsoft

Install:KB5002432

Microsoft Outlook 2016Microsoft

Install:KB5002427Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

3.22%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch1

msrc.microsoft.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-19.