CVE-2021-22927
HIGHCVSS 8.1/10EPSS 0.84%
Last modified
CVE-2021-22927 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A session fixation vulnerability exists in Citrix ADC and Citrix Gateway 13.0-82.45 when configured SAML service provider that could allow an attacker to hijack a session.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.
Description
A session fixation vulnerability exists in Citrix ADC and Citrix Gateway 13.0-82.45 when configured SAML service provider that could allow an attacker to hijack a session.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Citrix | Application Delivery Controller Firmware | >= 11.1, < 11.1-65.22 |
| Citrix | Application Delivery Controller Firmware | >= 12.1, < 12.1-62.27 |
| Citrix | Application Delivery Controller Firmware | >= 13.0, < 13.0-82.45 |
| Citrix | Application Delivery Controller Firmware | >= 12.1, < 12.1-55.238 |
| Citrix | Gateway | >= 12.1, < 12.1-62.27 |
| Citrix | Gateway | >= 13.0, < 13.0-82.45 |
| Citrix | Netscaler Gateway | >= 11.1, < 11.1-65.22 |
References
- https://support.citrix.com/article/CTX319135Vendor Advisory
- https://support.citrix.com/article/CTX319135Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-22927?
A session fixation vulnerability exists in Citrix ADC and Citrix Gateway 13.0-82.45 when configured SAML service provider that could allow an attacker to hijack a session.
How severe is CVE-2021-22927?
CVE-2021-22927 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22927?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-22927?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST