Skip to content
fr Sign in
7.5 High

CVE-2020-3255 A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an…

Description

A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a high rate of IPv4 or IPv6 traffic through an affected device. This traffic would need to match a configured block action in an access control policy. An exploit could allow the attacker to cause a memory exhaustion condition on the affected device, which would result in a DoS for traffic transiting the device, as well as sluggish performance of the management interface. Once the flood is stopped, performance should return to previous states.

Affected products and versions

Product Affected versions Fixed in
Cisco Firepower Threat Defense Software Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Cisco Firepower Threat Defense Software

The 162 CVEs of Cisco Firepower Threat Defense Software →
CVE-2025-20363 A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure… 9.0 Critical CVE-2025-20220 A vulnerability in the CLI of Cisco Secure Firewall Management Center (FMC) Software and Cisco Secure Firewall Threat… 6.0 Medium CVE-2025-20268 A vulnerability in the Geolocation-Based Remote Access (RA) VPN feature of Cisco Secure Firewall Threat Defense (FTD)… 5.8 Medium CVE-2025-20254 A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security… 5.8 Medium
Track this CVE