Is CVE-2019-1706 actively exploited?

No active exploitation of CVE-2019-1706 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-1706 be exploited remotely?

Yes. CVE-2019-1706 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-1706?

CVE-2019-1706 has a CVSS score of 8.6 (HIGH).

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HIGH

CVE-2019-1706

CWE-404Published: May 3, 2019· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

A vulnerability in the software cryptography module of the Cisco Adaptive Security Virtual Appliance (ASAv) and Firepower 2100 Series running Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error with how the software cryptography module handles IPsec sessions. An attacker could exploit this vulnerability by creating and sending traffic in a high number of IPsec sessions through the targeted device. A successful exploit could cause the device to reload and result in a DoS condition.

NVD Source

Technical Analysis

CVE-2019-1706 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.