CVE-2019-12693: Cisco Adaptive Security Appliance

Medium severity, CVSS 4.9. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability in the Secure Copy (SCP) feature of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to the use of an incorrect data type for a length variable. An attacker could exploit this vulnerability by initiating the transfer of a large file to an affected device via SCP. To exploit this vulnerability, the attacker would need to have valid privilege level 15 credentials on the affected device. A successful exploit could allow the attacker to cause the length variable to roll over, which could cause the affected device to crash.

Affected products

• Cisco Adaptive Security Appliance: before 9.6.4.30 (fixed in 9.6.4.30)
• Cisco Adaptive Security Appliance Software: from 9.7, before 9.8.4 (fixed in 9.8.4); from 9.9, before 9.9.2.50 (fixed in 9.9.2.50); from 9.10, before 9.10.1.22 (fixed in 9.10.1.22); from 9.12, before 9.12.2.1 (fixed in 9.12.2.1)

Published 2019-10-02. Last modified 2026-06-17.