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Vulnerabilities

Vulnerability · CVE-2022-27518

Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

Published Dec 13, 2022 · catalog updated Jun 16, 2026 · Citrix NetScaler ADC and NetScaler Gateway

Patch now

CVE-2022-27518 is in the CISA known-exploited catalog, due Jan 3, 2023. Confirm Citrix NetScaler ADC and NetScaler Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
6.86%
Remediation
Remediation guidance
Affected products
cpe citrix/application delivery controller firmware · cpe citrix/gateway firmware · vendor Citrix Application Delivery Controller (ADC) and Gateway · vendor Citrix NetScaler ADC and NetScaler Gateway

Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe citrix/application delivery controller firmwareversion unspecified
  • cpe citrix/gateway firmwareversion unspecified
  • vendor Citrix Application Delivery Controller (ADC) and Gatewayversion unspecified
  • vendor Citrix NetScaler ADC and NetScaler Gatewayversion unspecified

How to fix CVE-2022-27518

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-27518 is in the CISA known-exploited catalog, due Jan 3, 2023. Confirm Citrix NetScaler ADC and NetScaler Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-664. EPSS 6.86%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 13, 2022 · Catalog

    Detected

    Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

  2. Dec 13, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jan 3, 2023 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

Sources

  • CISA KEVConfirmed exploitationCVE-2022-27518

    Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2022-27518

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-27518

    30-day exploitation probability 6.9%

    first.org
  • NIST NVDVulnerability recordCVE-2022-27518

    Unauthenticated remote arbitrary code execution

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2022-27518

    Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.