CVE-2020-8193VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2020-8193: Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability

Affects Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP ApplianceSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
EPSS: 88.3% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-8193 (opens in a new tab)

Description

CVE-2020-8193 is an authorization bypass vulnerability affecting Citrix ADC, Gateway, and multiple Citrix SD-WAN WANOP appliance models. This flaw allows unauthenticated attackers with access to the NetScaler IP (NSIP) to access certain URL endpoints without proper authorization. The vulnerability has been exploited in the wild. No specific affected versions or patch information is provided in the input data.

Summary

Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliances contain an authorization bypass vulnerability (CVE-2020-8193) that may permit unauthenticated access to specific URL endpoints. Exploitation requires access to the NetScaler IP (NSIP). The vulnerability is classified under CWE-284 (Improper Access Control). It has been observed in active exploitation campaigns. No patch or remediation details are included in the provided information.

Impact

Successful exploitation allows unauthenticated attackers with NSIP access to bypass authorization controls and access restricted URL endpoints on affected Citrix appliances. This could lead to unauthorized information disclosure or further compromise depending on the accessed endpoints. The vulnerability is known to be exploited in the wild, indicating active threat use.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the NetScaler IP (NSIP) to trusted administrators only and monitor for unauthorized access attempts. Follow Citrix's official advisories for updates and mitigation instructions.

Weaknesses

CWE-284Improper Access Control (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:27:26 UTC

Weaknesses

References

Related threats