How severe is CVE-2024-20386?

CVE-2024-20386 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-20386 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20386?

CVE-2024-20386 primarily affects Cisco Firepower Management Center. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20386?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-20386 have an EU (EUVD) identifier?

Yes. CVE-2024-20386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18101.

When was CVE-2024-20386 published?

CVE-2024-20386 was published on 2024-10-23 and last updated on 2026-06-17.

CVE-2024-20386

CVE-2024-20386 is a medium-severity vulnerability in Cisco Firepower Management Center with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18101
Weakness: CWE-79
Affected product: Cisco Firepower Management Center
Published: 2024-10-23
Last modified: 2026-06-17

Description

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by inserting crafted input into various data fields in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface, or access sensitive, browser-based information.

Frequently asked questions

What is CVE-2024-20386?: A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by inserting crafted input into various data fields in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface, or access sensitive, browser-based information.
How severe is CVE-2024-20386?: CVE-2024-20386 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-20386 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20386?: CVE-2024-20386 primarily affects Cisco Firepower Management Center. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20386?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20386 have an EU (EUVD) identifier?: Yes. CVE-2024-20386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18101.
When was CVE-2024-20386 published?: CVE-2024-20386 was published on 2024-10-23 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-dhJxQYZs

Affected products (91)

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:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.11:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.12:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.13:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.14:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.15:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.16:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.17:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3.18:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.6:*:*:*:*:*:*:*

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