---
id: CVE-2019-1696
title: >-
  Multiple vulnerabilities in the Server Message Block (SMB) Protocol
  preprocessor detection engine for Cisco Firepower Threat Defense (FTD)
  Software could allow an unauthenticated, adjacent or remote attacker to cause
  a denial of service …
summary: >-
  Multiple vulnerabilities in the Server Message Block (SMB) Protocol
  preprocessor detection engine for Cisco Firepower Threat Defense (FTD)
  Software could allow an unauthenticated, adjacent or remote attacker to cause
  a denial of service …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-400
vendor: cisco
product: secure_firewall_management_center
affected:
  - secure_firewall_management_center = 2.9.8
  - secure_firewall_management_center = 2.9.9
  - secure_firewall_management_center = 2.9.10
  - secure_firewall_management_center = 2.9.11
  - secure_firewall_management_center = 2.9.12
  - secure_firewall_management_center = 2.9.13
  - 'secure_firewall_threat_defense >= 6.0.0, < 6.2.3.12'
patched:
  - secure_firewall_threat_defense 6.2.3.12
published: '2019-05-03'
updated: '2026-08-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-1696'
references:
  - url: 'http://www.securityfocus.com/bid/108171'
    label: psirt@cisco.com
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort
    label: psirt@cisco.com
  - url: 'http://www.securityfocus.com/bid/108171'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01799
epssPercentile: 0.77175
ingestedAt: '2026-08-11T19:48:26.448Z'
---

## Overview

Multiple vulnerabilities in the Server Message Block (SMB) Protocol preprocessor detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent or remote attacker to cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory.

## Affected

- `secure_firewall_management_center = 2.9.8`
- `secure_firewall_management_center = 2.9.9`
- `secure_firewall_management_center = 2.9.10`
- `secure_firewall_management_center = 2.9.11`
- `secure_firewall_management_center = 2.9.12`
- `secure_firewall_management_center = 2.9.13`
- `secure_firewall_threat_defense >= 6.0.0, < 6.2.3.12`

## Remediation

Upgrade past the affected range:

- `secure_firewall_threat_defense 6.2.3.12`