CVE-2020-8193

MEDIUM6.5

CISA KEV

Published 2020-07-10 · Updated 2026-06-17 · Source support@hackerone.com

Summary

CVE-2020-8193 is a medium-severity (CVSS 6.5) vulnerability in Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Citrix has 27 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.

All 27 known-exploited Citrix vulnerabilities →

Description

Improper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows unauthenticated access to certain URL endpoints.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE-284CWE-287

CISA Known-Exploited Vulnerability

Product: Citrix — Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance

Name: Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability

Date added: 2021-11-03 · Due: 2022-05-03

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Citrix vulnerabilities

Most recently added to CISA KEV

CVE-2026-88779
NetScaler — Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
added 2026-10-04
CVE-2026-88772
NetScaler — Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
added 2026-09-27
CVE-2026-88771
NetScaler — Citrix NetScaler Improper Input Validation Vulnerability
added 2026-09-27
CVE-2026-19490
NetScaler — Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
added 2026-09-09
CVE-2026-8452
NetScaler ADC and NetScaler Gateway — Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
added 2026-08-26
CVE-2026-3055
NetScaler — Citrix NetScaler Out-of-Bounds Read Vulnerability
added 2026-03-30

View all →

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