CVE-2021-22956
Last modified
CVE-2021-22956 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An uncontrolled resource consumption vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 that could allow an attacker with access to NSIP or SNIP with management interface access to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.. EPSS estimates a 0.89% chance of exploitation in the next 30 days.
Description
An uncontrolled resource consumption vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 that could allow an attacker with access to NSIP or SNIP with management interface access to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Citrix | Application Delivery Controller Firmware | < 11.1-65.23 |
| Citrix | Application Delivery Controller Firmware | >= 12.1, < 12.1-63.22 |
| Citrix | Application Delivery Controller Firmware | >= 13.0, < 13.0-83.27 |
| Citrix | Gateway | < 11.1-65.23 |
| Citrix | Gateway | >= 12.1, < 12.1-63.22 |
| Citrix | Gateway | >= 13.0, < 13.0-65.23 |
| Citrix | Sd-Wan | < 10.2.9c |
| Citrix | Sd-Wan | >= 11.4.0, < 11.4.2 |
References
- https://support.citrix.com/article/CTX330728Vendor Advisory
- https://support.citrix.com/article/CTX330728Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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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.
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