CVE-2016-3378

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Summary

CVECVE-2016-3378
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-09-14 10:59:52 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionOpen redirect vulnerability in Microsoft Exchange Server 2013 SP1, 2013 Cumulative Update 12, 2013 Cumulative Update 13, 2016 Cumulative Update 1, and 2016 Cumulative Update 2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted URL, aka "Microsoft Exchange Open Redirect Vulnerability."

Risk And Classification

Primary CVSS: v3.0 7.4 HIGH from [email protected]

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

EPSS: 0.031180000 probability, percentile 0.869070000 (date 2026-05-06)

Problem Types: CWE-20 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.4HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
2.0[email protected]Primary5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Exchange Server 2013 cumulative_update_12 All All
Application Microsoft Exchange Server 2013 cumulative_update_13 All All
Application Microsoft Exchange Server 2013 sp1 All All
Application Microsoft Exchange Server 2016 cumulative_update_1 All All
Application Microsoft Exchange Server 2016 cumulative_update_2 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Microsoft Security Bulletin MS16-108 - Critical | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com
Microsoft Exchange Server CVE-2016-3378 Open Redirection Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Microsoft Exchange Server Bugs Let Remote Users Obtain Potentially Sensitive Information and Conduct Cross-Site Scripting and Open Redirect Attacks - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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