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Secure Firewall Management Center CVE-2016-6434

HIGH
Improper Authentication (CWE-287)
2016-10-06 psirt@cisco.com
7.8
CVSS 3.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.39%.

Exploit ScenarioDerived

A local attacker with access to the system could bypass authentication mechanisms to gain unauthorized access.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAI

Cisco Firepower Management Center 6.0.1 has hardcoded database credentials, which allows local users to obtain sensitive information by leveraging CLI access, aka Bug ID CSCva30370. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. Cisco Firepower Management Center 6.0.1 has hardcoded database credentials, which allows local users to obtain sensitive information by leveraging CLI access, aka Bug ID CSCva30370. Affected products include: Cisco Secure Firewall Management Center.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Cisco Firepower Management Center 6.0.1 has hardcoded database credentials, which allows local users to obtain sensitive information by leveraging CLI access, aka Bug ID CSCva30370.

Threat Intelligence Overview

EPSS Score
0.4%
Top 40% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

59
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:cisco:secure_firewall_management_center:6.0.1:*:*:*:*:*:*:*
CVE-2026-20079 CRITICAL POC
10.0 Mar 04

Unauthenticated auth bypass in Cisco FMC web interface. CVSS 10.0.

CVE-2016-6433 HIGH POC
8.8 Oct 06

The Threat Management Console in Cisco Firepower Management Center 5.2.0 through 6.0.1 allows remote authenticated users

CVE-2016-6435 MEDIUM POC
6.5 Oct 06

The web console in Cisco Firepower Management Center 6.0.1 allows remote authenticated users to read arbitrary files via

CVE-2019-1978 MEDIUM POC
5.8 Nov 05

A vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services

CVE-2019-1642 MEDIUM POC
6.1 Jan 23

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) software could allow an

CVE-2024-20424 CRITICAL
9.9 Oct 23

A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software, formerl

CVE-2023-20048 CRITICAL
9.9 Nov 01

A vulnerability in the web services interface of Cisco Firepower Management Center (FMC) Software could allow an authent

CVE-2020-3318 CRITICAL
9.8 May 06

Multiple vulnerabilities in Cisco Firepower Management Center (FMC) Software and Cisco Firepower User Agent Software cou

CVE-2016-1457 HIGH
8.8 Aug 18

The web-based GUI in Cisco Firepower Management Center 4.x and 5.x before 5.3.1.2 and 5.4.x before 5.4.0.1 and Cisco Ada

CVE-2016-1458 HIGH
8.8 Aug 18

The web-based GUI in Cisco Firepower Management Center 4.x and 5.x before 5.3.0.3, 5.3.1.x before 5.3.1.2, and 5.4.x bef

CVE-2024-20360 HIGH
8.8 May 22

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an

CVE-2023-20220 HIGH
8.8 Nov 01

Multiple vulnerabilities in the web-based management interface of Cisco Firepower Management Center (FMC) Software could

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