VULNERABILITY INTELLIGENCE

CVE-2019-1886

CVSS score8.6 HIGH
EPSS probability1.35%
CISA KEVNot currently listed
Published2019-07-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Description

A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device.

Weakness classification

  • CWE-20: Improper Input Validation
  • CWE-295: Improper Certificate Validation

Primary references