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CVE-2020-8198

17
FAUCET Score

CVE-2020-8198 is a stored Cross-Site Scripting (XSS) vulnerability stemming from improper input validation in multiple versions of Citrix ADC, Citrix Gateway, and Citrix SDWAN WAN-OP appliances. This medium-severity vulnerability (CVSS 6.1) can be exploited remotely with low attack complexity, requiring user interaction, and could lead to limited confidentiality and integrity impacts. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has received some community discussion and media coverage. It is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.5, < 10.5-70.18CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 11.1, < 11.1-64.14CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 12.0, < 12.0-63.21CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 12.1, < 12.1-57.18CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 13.0, < 13.0-58.30CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.97%
Probability of exploitation in next 30 days
EPSS Percentile
58.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0097 is in the 70th percentile among its peer group of 26,219 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

citrixvendor investigatingvia nvd_reference
View patch

References

support.citrix.com / article/CTX276688
Vendor Advisory