CVE-2022-20743

Cisco Firepower Management Center File Upload Security Bypass Vulnerability

HIGH
8.8
CVSS Score
Published: May 3, 2022 at 03:15 AM UTC
Updated: June 17, 2026 at 04:24 AM UTC
2 products affected across 1 vendorSecure Firewall Management CenterFirepower Management Center

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Severity
HIGH8.8
Exploit prediction
EPSS 4%
SSVC
No known exploit

Description

A vulnerability in the web management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to bypass security protections and upload malicious files to the affected system. This vulnerability is due to improper validation of files uploaded to the web management interface of Cisco FMC Software. An attacker could exploit this vulnerability by uploading a maliciously crafted file to a device running affected software. A successful exploit could allow the attacker to store malicious files on the device, which they could access later to conduct additional attacks, including executing arbitrary code on the affected device with root privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.4.0.156.5.0 ≤ v < 6.6.5.26.7.0 ≤ v < 7.0.27.1.0 ≤ v < 7.1.0.1
Affected range stops below 6.4.0.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.1.0.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-434

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