---
id: CVE-2019-12698
title: >-
  A vulnerability in the WebVPN feature of Cisco Adaptive Security Appliance
  (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow
  an unauthenticated, remote attacker to cause increased CPU utilization on an
  affected…
summary: >-
  A vulnerability in the WebVPN feature of Cisco Adaptive Security Appliance
  (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow
  an unauthenticated, remote attacker to cause increased CPU utilization on an
  affected…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: cisco
product: adaptive_security_appliance
affected:
  - adaptive_security_appliance < 9.6.4.31
  - 'adaptive_security_appliance_software >= 9.7, < 9.8.4.9'
  - 'adaptive_security_appliance_software >= 9.9, < 9.9.2.56'
  - 'adaptive_security_appliance_software >= 9.10, < 9.10.1.30'
  - 'adaptive_security_appliance_software >= 9.12, < 9.12.2.9'
  - 'adaptive_security_appliance_software >= 9.13, < 9.13.1'
  - secure_firewall_threat_defense < 6.2.3.15
  - 'secure_firewall_threat_defense >= 6.3.0, < 6.3.0.5'
  - 'secure_firewall_threat_defense >= 6.4.0, < 6.4.0.6'
patched:
  - adaptive_security_appliance 9.6.4.31
  - adaptive_security_appliance_software 9.13.1
  - secure_firewall_threat_defense 6.4.0.6
published: '2019-10-02'
updated: '2026-08-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-12698'
references:
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-ftd-dos
    label: psirt@cisco.com
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-ftd-dos
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01967
epssPercentile: 0.79252
ingestedAt: '2026-08-11T19:48:27.044Z'
---

## Overview

A vulnerability in the WebVPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for a specific WebVPN HTTP page request. An attacker could exploit this vulnerability by sending multiple WebVPN HTTP page load requests for a specific URL. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition, which could cause traffic to be delayed through the device.

## Affected

- `adaptive_security_appliance < 9.6.4.31`
- `adaptive_security_appliance_software >= 9.7, < 9.8.4.9`
- `adaptive_security_appliance_software >= 9.9, < 9.9.2.56`
- `adaptive_security_appliance_software >= 9.10, < 9.10.1.30`
- `adaptive_security_appliance_software >= 9.12, < 9.12.2.9`
- `adaptive_security_appliance_software >= 9.13, < 9.13.1`
- `secure_firewall_threat_defense < 6.2.3.15`
- `secure_firewall_threat_defense >= 6.3.0, < 6.3.0.5`
- `secure_firewall_threat_defense >= 6.4.0, < 6.4.0.6`

## Remediation

Upgrade past the affected range:

- `adaptive_security_appliance 9.6.4.31`
- `adaptive_security_appliance_software 9.13.1`
- `secure_firewall_threat_defense 6.4.0.6`