CVE-2022-27518
Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
Published Dec 13, 2022 · corrected/updated Jun 16, 2026 · citrix application delivery controller firmware · evidence confidence very high
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2022-27518 is a critical public vulnerability record for citrix application delivery controller firmware. CISA lists it as known exploited. Published remediation guidance: Apply updates per vendor instructions. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether citrix application delivery controller firmware is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: citrix/application delivery controller firmware; citrix/gateway firmware; Citrix Application Delivery Controller (ADC) and Gateway. Published remediation guidance: Apply updates per vendor instructions. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.8, EPSS 6.9%. CISA lists it as known exploited. Weakness classes: CWE-664. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Confirmed in CISA KEV since Dec 13, 2022. Listed in the CISA Known Exploited Vulnerabilities catalog.
Patch and remediation
Apply updates per vendor instructions. CISA due date Jan 3, 2023.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
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.
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.
Dec 13, 2022 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Jan 3, 2023 · CISA KEV
Remediation due
Apply updates per vendor instructions.
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.
Affected
- cpe citrix/application delivery controller firmwareversion unspecified
- cpe citrix/gateway firmwareversion unspecified
- vendor Citrix Application Delivery Controller (ADC) and Gatewayversion unspecified
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