6.5

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

CVSS: 6.5v3.1MediumKEVAnalyzed
Published 10-07-2020Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2020-8193 is a medium (CVSS 6.5) Improper Access Control vulnerability in Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 88.27% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
88.27%
0%100%
Critical · -0.14 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 10-07-2020
    PublishedVulnerability first disclosed.
  2. 03-11-2021
    Added to CISA KEVCitrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerability
  3. 03-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

88.27%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

-0.14 pp

From 88.41% on 18-09-2026

18-09-202618-10-2026
EPSS score
88.27%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
03-11-2021
Federal due date
03-05-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-8193

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Citrix4 products
  • application_delivery_controller≥ 10.5, < 10.5-70.18 | ≥ 11.1, < 11.1-64.14 | ≥ 12.0, < 12.0-63.21 | ≥ 12.1, < 12.1-57.18 | ≥ 13.0, < 13.0-58.30
  • gateway≥ 13.0, < 13.0-58.30
  • netscaler_gateway≥ 10.5, < 10.5-70.18 | ≥ 11.1, < 11.1-64.14 | ≥ 12.0, < 12.0-63.21 | ≥ 12.1, < 12.1-57.18
  • sd-wan_wanop≥ 10.2, < 10.2.7 | ≥ 11.0, < 11.0.3d | ≥ 11.1, < 11.1.1a

1 vendor · 4 products

References

3 links