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CVE-2019-1832: Cisco Firepower Threat Defense Software Detection Engine Policy Bypass Vulnerability

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-16 · updated 2026-06-17
• Weakness: CWE-693

Description

A vulnerability in the detection engine of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access control policies. The vulnerability is due to improper validation of ICMP packets. An attacker could exploit this vulnerability by sending crafted ICMP packets to the affected device. A successful exploit could allow the attacker to bypass configured access control policies.

Affected products

• Cisco Firepower Management Center: 6.2.0, 6.2.0.5, 6.2.3, 6.2.3.1, 6.2.3.2, 6.4.0

References

• http://www.securityfocus.com/bid/108340
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-ftdde-poly-bypass
• http://www.securityfocus.com/bid/108340
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-ftdde-poly-bypass

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