CVE-2019-1706

Cisco Adaptive Security Appliance Software IPsec Denial of Service Vulnerability

HIGH
8.6
CVSS Score
Published: May 3, 2019 at 04:10 PM UTC
Updated: June 17, 2026 at 02:29 AM UTC
9 products affected across 1 vendorAdaptive Security ApplianceAsa 5525-XAsa 5555-X

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Severity
HIGH8.6
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

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

v < 9.9.2.509.9 ≤ v ≤ 9.9.2.50
Affected range stops below 9.9.2.50, so it looks safe — our inference, not a vendor statement
cisco-asa-5506-x (environment) · cisco-asa-5506h-x (environment) · cisco-asa-5506w-x (environment) · cisco-asa-5508-x (environment) · cisco-asa-5516-x (environment) · cisco-asa-5525-x (environment) · cisco-asa-5545-x (environment) · cisco-asa-5555-x (environment)
All versions
All versions
All versions
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-404CWE-327

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