7.5

CVE-2022-20854: cisco cisco firepower management center Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighModified
Published 10-11-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2022-20854 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in cisco cisco firepower management center. EPSS estimates a 0.95% chance of exploitation in the next 30 days, higher than 60.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.95%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-11-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the processing of SSH connections of Cisco Firepower Management Center (FMC) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling when an SSH session fails to be established. An attacker could exploit this vulnerability by sending a high rate of crafted SSH connections to the instance. A successful exploit could allow the attacker to cause resource exhaustion, resulting in a reboot on the affected device.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.95%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

+0.03 pp

From 0.92% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.95%

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

Cisco4 products
  • cisco firepower management centern/a
  • cisco firepower threat defense softwaren/a
  • secure_firewall_management_center≥ 6.1.0, ≤ 6.1.0.7 | ≥ 6.2.0, ≤ 6.2.0.6 | ≥ 6.2.2, ≤ 6.2.2.5 | ≥ 6.2.3, ≤ 6.2.3.18 | ≥ 6.3.0, ≤ 6.3.0.5 | ≥ 6.4.0, ≤ 6.4.0.15 | ≥ 6.5.0, ≤ 6.5.0.5 | ≥ 6.7.0, ≤ 6.7.0.3 | 6.2.1 | 6.6.0 | 6.6.0.1 | 6.6.1 | 6.6.3 | 6.6.4 | 6.6.5 | 6.6.5.1 | 6.6.5.2 | 7.0.0 | 7.0.0.1 | 7.0.1 | 7.0.1.1 | 7.0.2 | 7.0.2.1 | 7.0.3 | 7.0.4
  • secure_firewall_threat_defense≥ 6.1.0, ≤ 6.1.0.7 | ≥ 6.2.0, ≤ 6.2.0.6 | ≥ 6.2.2, ≤ 6.2.2.5 | ≥ 6.2.3, ≤ 6.2.3.18 | ≥ 6.3.0, ≤ 6.3.0.5 | ≥ 6.4.0, ≤ 6.4.0.15 | ≥ 6.5.0, ≤ 6.5.0.5 | ≥ 6.7.0, ≤ 6.7.0.3 | 6.2.1 | 6.6.0 | 6.6.0.1 | 6.6.1 | 6.6.3 | 6.6.4 | 6.6.5 | 6.6.5.1 | 6.6.5.2 | 7.0.0 | 7.0.0.1 | 7.0.1 | 7.0.1.1 | 7.0.2 | 7.0.2.1 | 7.0.3 | 7.0.4

1 vendor · 4 products

References

1 links