How to check if you are exposed to CVE-2020-8193
- Find every Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2020-8193.
US federal agencies had to fix this by 2022-05-03. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2020-8193. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| Citrix Sd-Wan Wanop | from 10.2 before 10.2.7; from 11.0 before 11.0.3d; from 11.1 before 11.1.1a |
| Citrix Application Delivery Controller Firmware | from 10.5 before 10.5-70.18; from 11.1 before 11.1-64.14; from 12.0 before 12.0-63.21; from 12.1 before 12.1-57.18; from 13.0 before 13.0-58.30 |
| Citrix Netscaler Gateway Firmware | from 10.5 before 10.5-70.18; from 11.1 before 11.1-64.14; from 12.0 before 12.0-63.21; from 12.1 before 12.1-57.18 |
| Citrix Gateway Firmware | from 13.0 before 13.0-58.30 |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, 481 days after it was published
- · Fix-by date for US federal agencies, passed 1,643 days ago
Weakness type
More exploited Citrix vulnerabilities
CISA lists 27 exploited Citrix vulnerabilities. The closest matches:
- CVE-2020-8196Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure VulnerabilityAdded 2021-11-03
- CVE-2020-8195Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure VulnerabilityAdded 2021-11-03
- CVE-2019-19781Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution VulnerabilityAdded 2021-11-03
- CVE-2026-88779Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityAdded 2026-10-04
- CVE-2026-88772Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityAdded 2026-09-27
- CVE-2026-88771Citrix NetScaler Improper Input Validation VulnerabilityAdded 2026-09-27
- CVE-2026-19490Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel VulnerabilityAdded 2026-09-09
- CVE-2026-8452Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityAdded 2026-08-26
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.