VULNERABILITY INTELLIGENCE

CVE-2018-15443

CVSS score5.8 MEDIUM
EPSS probability2.77%
CISA KEVNot currently listed
Published2018-11-08
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Description

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.

Weakness classification

  • CWE-400: Uncontrolled Resource Consumption

Primary references