CVE-2019-12673

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability

HIGH

7.5

CVSS Score

Published: October 2, 2019 at 07:00 PM UTC

Updated: August 11, 2026 at 07:37 PM UTC

12 products affected across 1 vendorAdaptive Security ApplianceSecure Firewall Threat DefenseASA 5580

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Severity

HIGH7.5

Exploit prediction

EPSS 2%

SSVC

No known exploit

Description

A vulnerability in the FTP inspection engine of Cisco Adaptive Security (ASA) Software and 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 insufficient validation of FTP data. An attacker could exploit this vulnerability by sending malicious FTP traffic through an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Adaptive Security Appliance · Cisco

95%

v < 9.6.4.349.10 ≤ v < 9.10.1.309.12 ≤ v < 9.12.2.59.7 ≤ v < 9.8.4.109.9 ≤ v < 9.9.2.56

Affected range stops below 9.10.1.30, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.12.2.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.6.4.34, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.8.4.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.9.2.56, so it looks safe — our inference, not a vendor statement

cisco-asa-5505 (environment) · cisco-asa-5510 (environment) · cisco-asa-5512-x (environment) · cisco-asa-5515-x (environment) · cisco-asa-5520 (environment) · cisco-asa-5525-x (environment) · cisco-asa-5550 (environment) · cisco-asa-5555-x (environment) · cisco-asa-5580 (environment) · cisco-asa-5585-x (environment)

Secure Firewall Threat Defense · Cisco

95%

v < 6.3.0.56.4.0 ≤ v < 6.4.0.4

ASA 5505 · Ciscodevice

80%

All versions

ASA 5510 · Ciscodevice

80%

All versions

Asa 5512-X · Ciscodevice

80%

All versions