Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability
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.
- Vendor
- Citrix
- Product
- Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
- CVSS
- 6.5
- EPSS (exploit probability)
- 88.3%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2020-8193 being exploited?
Yes. CISA added CVE-2020-8193 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 88.3% (scored October 17, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2020-8193 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (181 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2020-8196 Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability | [ MEDIUM ] | 4.3 | 26.3% | |
| CVE-2020-8195 Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability | [ MEDIUM ] | 6.5 | 33.0% | |
| CVE-2019-19781 Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 100.0% |