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TI-2021-05780 Aliases CVE-2021-22919GHSA-8v5q-r6pr-xg3j

Resource allocation without limits in Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP

Priority LOW 35CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.

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.

Why it matters now

EPSS 0.0094 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOPCitrix ADC and Citrix Gateway 13.0-82.45 and later releases of 13.0 Citrix ADC and Citrix Gateway 12.1-62.27 and later releases of 12.1 Citrix ADC and NetScaler Gateway 11.1-65.22 and later releases of 11.1 Citrix ADC 12.1-FIPS 12.1-55.247 and later releases of 12.1-FIPS Citrix SD-WAN WANOP Edition 11.4.0a and later releases of 11.4 Citrix SD-WAN WANOP Edition 11.3.2a and later releases of 11.3 Citrix SD-WAN WANOP Edition 11.2.3b and later releases of 11.2 Citrix SD-WAN WANOP Edition 10.2.9b and later releases of 10.2—No fix listedCNA
  • Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP Vendor— Affected Citrix ADC and Citrix Gateway 13.0-82.45 and later releases of 13.0 Citrix ADC and Citrix Gateway 12.1-62.27 and later releases of 12.1 Citrix ADC and NetScaler Gateway 11.1-65.22 and later releases of 11.1 Citrix ADC 12.1-FIPS 12.1-55.247 and later releases of 12.1-FIPS Citrix SD-WAN WANOP Edition 11.4.0a and later releases of 11.4 Citrix SD-WAN WANOP Edition 11.3.2a and later releases of 11.3 Citrix SD-WAN WANOP Edition 11.2.3b and later releases of 11.2 Citrix SD-WAN WANOP Edition 10.2.9b and later releases of 10.2 Fixed in — No fix listed CNA

CPE configurations NVD · 22

CPEVersionsRoleVendor
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*11.1 to before 11.1-65.22; 12.1 to before 12.1-62.27; 13.0 to before 13.0-82.45VulnerableCitrix
cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*12.1 to before 12.1-55.238VulnerableCitrix
cpe:2.3:h:citrix:mpx\/sdx_14030_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx\/sdx_14060_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx\/sdx_14080_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_15030-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_15040-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_15060-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_15080-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
  • cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* Versions 11.1 to before 11.1-65.22; 12.1 to before 12.1-62.27; 13.0 to before 13.0-82.45 Vulnerable ·Citrix
  • cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* Versions 12.1 to before 12.1-55.238 Vulnerable ·Citrix
  • cpe:2.3:h:citrix:mpx\/sdx_14030_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx\/sdx_14060_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx\/sdx_14080_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_15030-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_15040-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_15060-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_15080-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
Show 12 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:citrix:mpx_15100-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_15120-50g_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_8905_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_8910_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:mpx_8920_fips:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*12.1 to before 12.1-62.27; 13.0 to before 13.0-82.45VulnerableCitrix
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*11.1 to before 11.1-65.22VulnerableCitrix
cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*10.2 to before 10.2.9.b; 11.2 to before 11.2.3.b; 11.3 to before 11.3.2.a; 11.4 to before 11.4.0.aVulnerableCitrix
cpe:2.3:h:citrix:4000-wo:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:4100-wo:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:5000-wo:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
cpe:2.3:h:citrix:5100-wo:-:*:*:*:*:*:*:*not specified by NVDRunning onCitrix
  • cpe:2.3:h:citrix:mpx_15100-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_15120-50g_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_8905_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_8910_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:mpx_8920_fips:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:* Versions 12.1 to before 12.1-62.27; 13.0 to before 13.0-82.45 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* Versions 11.1 to before 11.1-65.22 Vulnerable ·Citrix
  • cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* Versions 10.2 to before 10.2.9.b; 11.2 to before 11.2.3.b; 11.3 to before 11.3.2.a; 11.4 to before 11.4.0.a Vulnerable ·Citrix
  • cpe:2.3:h:citrix:4000-wo:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:4100-wo:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:5000-wo:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
  • cpe:2.3:h:citrix:5100-wo:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-22919
  2. 2026-10-03 Alias added: GHSA-8v5q-r6pr-xg3j

References

Advisory 1

  • TI-2022-10528 Unauthenticated remote arbitrary code execution in Citrix Gateway, Citrix ADC KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-14254 An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-06613 Improper input validation in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 6.5
  • TI-2020-06611 Improper access control in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 6.5
  • TI-2020-06614 Improper access control in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 4.3
  • TI-2018-05232 The AppFirewall functionality in Citrix NetScaler Application Delivery Controller and… CVSS 3.0CRITICAL 9.8
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences