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Servers and applications

CVE-2017-8621

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".

Severity
Medium 6.1
Published
11 Jul 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.2% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Open redirect (CWE-601)
Attack
Over the network · No login needed · Needs someone to click or open something
Attacker can
Read some data · Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server
  • Version 2010-sp3
  • Version 2013-cumulative_update_16
  • Version 2013-sp1
  • Version 2016-cumulative_update_5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-8621
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-8621