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CVE-2021-22920

22
FAUCET Score

CVE-2021-22920 is a medium-severity vulnerability affecting Citrix ADC, Citrix Gateway, and specific Citrix SD-WAN WANOP Edition models. It allows for a SAML authentication hijack, potentially leading to phishing attacks and the theft of valid user sessions. The attack requires user interaction (UI:R) but can be executed remotely (AV:N). There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
12.1-62.25CPE matchmatch criteria
cpe:2.3:a:citrix:application_delivery_management:12.1-62.25:*:*:*:*:*:*:*
13.0-82.42CPE matchmatch criteria
cpe:2.3:a:citrix:application_delivery_management:13.0-82.42:*:*:*:*:*:*:*
12.1-62.25CPE matchmatch criteria
cpe:2.3:a:citrix:gateway:12.1-62.25:*:*:*:*:*:*:*
13.0-82.42CPE matchmatch criteria
cpe:2.3:a:citrix:gateway:13.0-82.42:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 68th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

No media coverage found for this CVE.

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/CTX319135
Vendor Advisory