VULNERABILITY INTELLIGENCE

CVE-2023-20215

CVSS score5.8 MEDIUM
EPSS probability0.62%
CISA KEVNot currently listed
Published2023-08-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Description

A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked. This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.

Weakness classification

  • psirt@cisco.com: CWE-202
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references