CVE-2017-8621 Open redirect in Microsoft Exchange Server 2010 SP3, Exchange Server 2013 SP3, Exchange Server 2013 CU16, and Exchange Server 2016 CU5.
Attackers can exploit an open redirect in Microsoft Exchange Server to spoof trusted sites and potentially trick users into visiting malicious URLs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-8621?
CVE-2017-8621 is a medium-severity vulnerability in Microsoft Exchange Server, published on 11 Jul 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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".
Weakness: CWE-601
Which versions are affected by CVE-2017-8621?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2017-8621?
No fix has been published for CVE-2017-8621 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-8621 being exploited?
There is no known exploitation of CVE-2017-8621 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Exchange Server
- CVE-2024-21410 Microsoft Exchange Server Privilege Escalation
- CVE-2021-34473 Microsoft Exchange Server Remote Code Execution
- CVE-2021-26855 Microsoft Exchange Server Remote Code Execution
- CVE-2021-34523 Microsoft Exchange Server Privilege Escalation
- CVE-2023-21529 Microsoft Exchange Server Deserialization of Untrusted Data
Sources
Also known as GHSA-vfc8-gvw2-fjv6.