How severe is CVE-2020-3302?

CVE-2020-3302 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2020-3302 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3302?

CVE-2020-3302 affects Cisco Secure Firewall Management Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3302?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-3302 published?

CVE-2020-3302 was published on 2020-05-06 and last updated on 2026-06-17.

CVE-2020-3302

CVE-2020-3302 is a high-severity vulnerability in Cisco Secure Firewall Management Center with a CVSS 3.x base score of 8.1. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 8.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Secure Firewall Management Center
Published: 2020-05-06
Last modified: 2026-06-17

Description

A vulnerability in the web UI of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to overwrite files on the file system of an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by uploading a crafted file to the web UI on an affected device. A successful exploit could allow the attacker to overwrite files on the file system of the affected device.

Frequently asked questions

What is CVE-2020-3302?: A vulnerability in the web UI of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to overwrite files on the file system of an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by uploading a crafted file to the web UI on an affected device. A successful exploit could allow the attacker to overwrite files on the file system of the affected device.
How severe is CVE-2020-3302?: CVE-2020-3302 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2020-3302 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3302?: CVE-2020-3302 affects Cisco Secure Firewall Management Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3302?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-3302 published?: CVE-2020-3302 was published on 2020-05-06 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmcai-z5dQObVN

Affected products (1)

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

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