What’s Vulnerable › Vulnerabilities

CVE-2019-1696: Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerabilities

• Severity: high (CVSS 7.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-03 · updated 2026-08-11
• Weakness: CWE-400

Description

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 products

• Cisco Firepower Management Center: 2.9.8, 2.9.9, 2.9.10, 2.9.11, 2.9.12, 2.9.13
• Cisco Firepower Threat Defense Software: from 6.0.0 before 6.2.3.12 — fixed in 6.2.3.12

How to fix

Upgrade to a fixed version: Cisco Firepower Threat Defense Software 6.2.3.12. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/108171
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort
• http://www.securityfocus.com/bid/108171
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort

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