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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (70.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Cisco Firepower Threat Defense Software
- Cisco Firepower Threat Defense — versions 7.1.0
- Cisco Secure Firewall Threat Defense — versions 7.1.0
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tcp-… (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.