CVE-2022-20746
High
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.
SeverityHigh
CVSS8.6
Exploit probability—
Product
Cisco Secure Firewall Threat Defense
PublishedMay 3, 2022
First seenMay 3, 2022
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- cisco secure_firewall_threat_defense6.4.0.15, 6.6.5.2, 7.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco secure_firewall_threat_defense | v < 6.4.0.15, 6.5.0 ≤ v < 6.6.5.2, 7.0.0 ≤ v < 7.0.2, 7.1.0 | 6.4.0.15, 6.6.5.2, 7.0.2 |
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