NULL pointer dereference in Cisco Firepower Threat Defense Software
CVE-2022-20746
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.
EPSS: 0.013 (67.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Firepower Threat Defense Software — versions n/a
- Cisco Firepower_threat_defense — versions 7.1.0
- Cisco Secure_firewall_threat_defense — versions 7.1.0
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20746?
- CVE-2022-20746 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under NULL Pointer Dereference. CVSS score: 8.6/10. Published 2022-05-03.
- How severe is CVE-2022-20746?
- High severity. CVSS v3 base score is 8.6 out of 10.