9

CVE-2020-3309: cisco cisco firepower threat defense software Improper Input Validation

CVSS: 9.0v2.0HighModified
Published 06-05-2020Last modified 15-11-2024

Vulnerability summary

CVE-2020-3309 is a high (CVSS 9.0) Improper Input Validation vulnerability in cisco cisco firepower threat defense software. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 77.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.0/10
010
High · v2.0 (NVD)
EPSS score
1.77%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-05-2020
    PublishedVulnerability first disclosed.
  2. 15-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in Cisco Firepower Device Manager (FDM) On-Box software could allow an authenticated, remote attacker to overwrite arbitrary files on the underlying operating system of an affected device. The vulnerability is due to improper input validation. An attacker could exploit this vulnerability by uploading a malicious file to an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on as well as modify the underlying operating system of an affected device.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.77%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.77% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.77%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

1 vendor · 2 products

References

1 links