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CVE-2020-3456

Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability

HIGH
8.8
CVSS Score
Published: October 21, 2020 at 06:36 PM UTC
Updated: June 17, 2026 at 03:18 AM UTC
18 products affected across 1 vendorFirepower Extensible Operating SystemFirepower 4110Firepower 4140

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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

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

Firepower Extensible Operating System· Cisco
95%
2.4(1.249)
cisco-firepower-4110 (environment) · cisco-firepower-4112 (environment) · cisco-firepower-4115 (environment) · cisco-firepower-4120 (environment) · cisco-firepower-4125 (environment) · cisco-firepower-4140 (environment) · cisco-firepower-4145 (environment) · cisco-firepower-4150 (environment) · cisco-firepower-9300-sm-24 (environment) · cisco-firepower-9300-sm-36 (environment) · cisco-firepower-9300-sm-40 (environment) · cisco-firepower-9300-sm-44 (environment) · cisco-firepower-9300-sm-44-x-3 (environment) · cisco-firepower-9300-sm-48 (environment) · cisco-firepower-9300-sm-56 (environment) · cisco-firepower-9300-sm-56-x-3 (environment)
Adaptive Security Appliance· Cisco
60%
All versions
Firepower 4110· Ciscodevice
80%
All versions
Firepower 4112· Ciscodevice
80%
All versions
Firepower 4115· Ciscodevice
80%
All versions
Firepower 4120· Ciscodevice
80%
All versions
Firepower 4125· Ciscodevice
80%
All versions
Firepower 4140· Ciscodevice
80%
All versions
Firepower 4145· Ciscodevice
80%
All versions
Firepower 4150· Ciscodevice
80%
All versions

Remediation

No guide yet

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

Patch and advisory references

References (1)

Vendor Advisoryx_refsource_CISCOPatch
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxosfcm-csrf-uhO4e5BZ

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.8HIGHcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-352

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