What is the CVSS score of CVE-2024-20388?

CVE-2024-20388 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.4%.

Firepower Management Center CVE-2024-20388

MEDIUM

Exposure of Sensitive Information Through Data Queries (CWE-202)

2024-10-23 psirt@cisco.com

Authentication Bypass Cisco Firepower Threat Defense Secure Firewall Management Center Firepower Management Center

5.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-202 ASVS 5.0 V14 - Data Protection Sensitive data in outbound message
Impact	CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAI

A vulnerability in the password change feature of Cisco Firepower Management Center (FMC) software could allow an unauthenticated, remote attacker to determine valid user names on an affected device. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-202. A vulnerability in the password change feature of Cisco Firepower Management Center (FMC) software could allow an unauthenticated, remote attacker to determine valid user names on an affected device. This vulnerability is due to improper authentication of password update responses. An attacker could exploit this vulnerability by forcing a password reset on an affected device. A successful exploit could allow the attacker to determine valid user names in the unauthenticated response to a forced password reset. Affected products include: Cisco Firepower Management Center, Cisco Secure Firewall Management Center, Cisco Firepower Threat Defense.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

DescriptionNVD

A vulnerability in the password change feature of Cisco Firepower Management Center (FMC) software could allow an unauthenticated, remote attacker to determine valid user names on an affected device. This vulnerability is due to improper authentication of password update responses. An attacker could exploit this vulnerability by forcing a password reset on an affected device. A successful exploit could allow the attacker to determine valid user names in the unauthenticated response to a forced password reset.

Threat Intelligence Overview

EPSS Score

0.4%

Top 64% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

VulDB

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 MEDIUM

CISA KEV No

Public POC No

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +26

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

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

Affected Products (CPE)NVD

cpe:2.3:a:cisco:firepower_management_center:6.4.0.17:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:6.4.0.18:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:6.6.7.2:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.0.6.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.0.6.2:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.5.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.5.2:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.6:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.7:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.8:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.2.8.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.4.0:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.4.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:firepower_management_center:7.4.1.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.1:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.2:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.3:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.4:*:*:*:*:*:*:*

cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.5:*:*:*:*:*:*:*

+ 84 more

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