CVEs / CVE-2020-8193

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

Known exploited in the CISA KEV catalog since 3 Nov 2021
medium 6.5 CVSS 3.1 (NVD)
EPSS 88.2% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an authorization bypass vulnerability that may allow unauthenticated access to certain URL endpoints. The attacker must have access to the NetScaler IP (NSIP) in order to perform exploitation.
CISA, Known Exploited Vulnerabilities catalog

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.
The CVE record, via NVD · published 10 Jul 2020 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
n/a Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP	Citrix ADC and Citrix Gateway 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 11.1.1a, 11.0.3d and 10.2.7	—

Exploitation

In CISA KEV since	3 Nov 2021
Due date for US federal agencies	3 May 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	6.5 medium `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N` Scored by NVD
Weakness	CWE-284, CWE-287

References

CVE-2020-8193 on NVD
CVE-2020-8193 in the CISA KEV catalog
http://packetstormsecurity.com/files/160047/Citrix-ADC-NetScaler-Local-File-Inclusion.html Exploit, Third Party Advisory, VDB Entry
https://support.citrix.com/article/CTX276688 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8193 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.