What’s Vulnerable › Vulnerabilities

CVE-2020-3456: Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-21 · updated 2026-06-17
• Weakness: CWE-352

Description

A vulnerability in the Cisco Firepower Chassis Manager (FCM) of Cisco FXOS Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack against a user of an affected device. The vulnerability is due to insufficient CSRF protections for the FCM interface. An attacker could exploit this vulnerability by persuading a targeted user to click a malicious link. A successful exploit could allow the attacker to send arbitrary requests that could take unauthorized actions on behalf of the targeted user.

Affected products

• Cisco Firepower Extensible Operating System (FXOS): 2.4(1.249)

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxosfcm-csrf-uhO4e5BZ
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxosfcm-csrf-uhO4e5BZ

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