🛡️ CVE-2022-20805 — umbrella-secure-web-gateway

🟡 CVSS 4.1 — Medium ✅ No Known Exploit CWE-693 NVD
4.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in the automatic decryption process in Cisco Umbrella Secure Web Gateway (SWG) could allow an authenticated, adjacent attacker to bypass the SSL decryption and content filtering policies on an affected system. This vulnerability is due to how the decryption function uses the TLS Sever Name Indication (SNI) extension of an HTTP request to discover the destination domain and determine if the request needs to be decrypted. An attacker could exploit this vulnerability by sending a crafted request over TLS from a client to an unknown or controlled URL. A successful exploit could allow an attacker to bypass the decryption process of Cisco Umbrella SWG and allow malicious content to be downloaded to a host on a protected network. There are workarounds that address this vulnerability.

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

CVE-2022-20805 is classified as CWE-693: Protection Mechanism Failure. A protection exists but does not cover the case at hand, so it can be worked around.

Affected software

CVE-2022-20805 is recorded against 1 package.

  • umbrella-secure-web-gateway

Timeline and source

Published on 21 April 2022 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

tools.cisco.com
tools.cisco.com

Details

Severity MEDIUM
CVSS Score 4.1
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
CWE CWE-693
Public Exploit ✅ No
Source NVD
Published 2022-04-21
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
umbrella-secure-web-gateway — —

Similar Threats

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