8.6

CVE-2022-20746: cisco cisco firepower threat defense software NULL Pointer Dereference

CVSS: 8.6v3.1HighModified
Published 03-05-2022Last modified 06-11-2024
Open JSON

Vulnerability summary

CVE-2022-20746 is a high (CVSS 8.6) NULL Pointer Dereference vulnerability in cisco cisco firepower threat defense software. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
1.36%
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. 03-05-2022
    PublishedVulnerability first disclosed.
  2. 06-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the TCP proxy functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper handling of TCP flows. An attacker could exploit this vulnerability by sending a crafted stream of TCP traffic through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.36%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

+0.03 pp

From 1.32% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.36%

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

Cisco2 products

1 vendor · 2 products

References

1 links