CVE & CISA-KEV Catalog

CVE-2017-8621

MEDIUMEPSS 86th pctl
6.1
CVSS v3
NVD

Description

Microsoft Exchange Server 2010 SP3, Exchange Server 2013 SP3, Exchange Server 2013 CU16, and Exchange Server 2016 CU5 allows an open redirect vulnerability that could lead to spoofing, aka "Microsoft Exchange Open Redirect Vulnerability".

CWE-601Open Redirect

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged

Impact

ConfidentialityLow
IntegrityLow
AvailabilityNone

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

Exploit Intelligence

3.17%probability of exploitation in 30 days
86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Embed a live status badge for CVE-2017-8621
CVE-2017-8621 severity badge

Markdown

[![CVE-2017-8621](https://tridentstack.com/cve/badge/CVE-2017-8621.svg)](https://tridentstack.com/cve/CVE-2017-8621)

HTML

<a href="https://tridentstack.com/cve/CVE-2017-8621"><img src="https://tridentstack.com/cve/badge/CVE-2017-8621.svg" alt="CVE-2017-8621"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2026-05-13.