What’s Vulnerable › Vulnerabilities

CVE-2020-3309: Cisco Firepower Device Manager On-Box Software Arbitrary File Overwrite Vulnerability

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-06 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in Cisco Firepower Device Manager (FDM) On-Box software could allow an authenticated, remote attacker to overwrite arbitrary files on the underlying operating system of an affected device. The vulnerability is due to improper input validation. An attacker could exploit this vulnerability by uploading a malicious file to an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on as well as modify the underlying operating system of an affected device.

Affected products

• Cisco Firepower Device Manager On-Box: before 6.2.3 — fixed in 6.2.3

How to fix

Upgrade to a fixed version: Cisco Firepower Device Manager On-Box 6.2.3. Check the vendor advisory for mitigations.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fdmfo-HvPWKxDe
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fdmfo-HvPWKxDe

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