CVE-2021-22919 json
A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway…
published 2021-08-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10048
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.
Patch / fix
- citrix gateway 12.1-62.27, 13.0-82.45
- citrix netscaler_gateway 11.1-65.22
- citrix application_delivery_controller_firmware 11.1-65.22, 12.1-55.238, 12.1-62.27, 13.0-82.45
- citrix sd-wan_wanop 10.2.9.b, 11.2.3.b, 11.3.2.a, 11.4.0.a
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
- Technology feeds
References
-
support.citrix.com
/article/CTX319135
vendor-advisory
Sources
- CVE List CVE-2021-22919
- NVD CVE-2021-22919
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