Is CVE-2016-3366 in the CISA KEV catalog?

No. CVE-2016-3366 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-3366?

CVE-2016-3366 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2016-3366?

CVE-2016-3366 has an EPSS score of 16.23% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2016-3366

MEDIUMEPSS 97th pctl

6.5

CVSS v3

NVD

Description

Microsoft Outlook 2007 SP3, Outlook 2010 SP2, Outlook 2013 SP1, Outlook 2013 RT SP1, Outlook 2016, and Outlook 2016 for Mac do not properly implement RFC 2046, which allows remote attackers to bypass virus or spam detection via crafted MIME data in an e-mail attachment, aka "Microsoft Office Spoofing Vulnerability."

CWE-284Improper Access Control

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

16.23%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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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 2026-05-06.