CVE-2020-3558 Cisco Firepower Management Center Software Open Redirect Vulnerability
An unauthenticated attacker can redirect users to malicious sites via improper input validation in the Cisco FMC web interface, facilitating phishing attacks.
- 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-2020-3558?
CVE-2020-3558 is a medium-severity vulnerability in Cisco Secure Firewall Management Center, published on 21 Oct 2020. 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
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting an HTTP request from a user. A successful exploit could allow the attacker to modify the HTTP request to cause the interface to redirect the user to a specific, malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.
Weakness: CWE-601
Which versions are affected by CVE-2020-3558?
It affects 1 product.
Products include Cisco Secure Firewall Management Center.
How do I fix CVE-2020-3558?
No fix has been published for CVE-2020-3558 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3558 being exploited?
There is no known exploitation of CVE-2020-3558 in the wild and no public exploit code.
Other vulnerabilities in Cisco Secure Firewall Management Center
- CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel
- CVE-2026-20131 Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data
- CVE-2026-20316 Cisco Secure Firewall Management Center Use of Hard-coded Password
- CVE-2025-20265 Cisco Secure Firewall Management Center Software Radius Remote Code Execution Vulnerability
- CVE-2024-20424 Command injection in Cisco Firepower Management Center
Sources
Also known as GHSA-8r65-m25w-r5xr.