CVE-2021-1477

Cisco Firepower Management Center Software Policy Vulnerability

MEDIUM
4.3
CVSS Score
Published: April 29, 2021 at 05:30 PM UTC
Updated: June 17, 2026 at 03:31 AM UTC
2 products affected across 1 vendorSecure Firewall Management CenterFirepower Management Center

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

A vulnerability in an access control mechanism of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to access services beyond the scope of their authorization. This vulnerability is due to insufficient enforcement of access control in the affected software. An attacker could exploit this vulnerability by directly accessing the internal services of an affected device. A successful exploit could allow the attacker to overwrite policies and impact the configuration and operation of the affected device.

Affected

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

v < 6.4.0.126.5.0 ≤ v < 6.6.36.7.0 ≤ v < 6.7.0.2
Affected range stops below 6.4.0.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.0.2, 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

4.3MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284NVD-CWE-Other

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