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5.3mediumMedium

CVE-2020-3564

Cisco Adaptive Security Appliance

A vulnerability in the FTP inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass FTP inspection. The vulnerability is due to ineffective flow tracking of FTP traffic. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and successfully complete FTP connections.

Exploitation status

  • A vendor advisory or patch reference has been published.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
5.3 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-284
Assigned by
psirt@cisco.com

Dates

Published
2020-10-21
Last modified
2026-08-11
Sources
NVD

Affected products

  • Cisco Adaptive Security Appliance- 9.6
  • Cisco Secure Firewall Threat Defense- 6.3.0.6, 6.4.0 - 6.4.0.10, 6.5.0 - 6.5.0.5, 6.6.0 - 6.6.1
  • Cisco Adaptive Security Appliance Software9.8.0 - 9.8.4.26, 9.9.0 - 9.9.2.80, 9.10.0 - 9.10.1.44, 9.12.0 - 9.12.4.4, 9.13.0 - 9.13.1.13, 9.14.0 - 9.14.1.19

As listed in the NVD configuration data. Not a statement about your estate.

References