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PatchSiren cyber security CVE debrief

CVE-2022-27518 Citrix CVE debrief

CVE-2022-27518 is an authentication bypass vulnerability affecting Citrix Application Delivery Controller (ADC) and Citrix Gateway. CISA added it to the Known Exploited Vulnerabilities catalog on 2022-12-13, which means defenders should treat it as an active risk and follow vendor update guidance without delay.

Vendor
Citrix
Product
Application Delivery Controller (ADC) and Gateway
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-12-13
Original CVE updated
2022-12-13
Advisory published
2022-12-13
Advisory updated
2022-12-13

Who should care

Administrators and security teams responsible for Citrix ADC and Citrix Gateway deployments, especially internet-facing systems and environments that rely on these products for remote access or authentication.

Technical summary

The supplied sources identify CVE-2022-27518 as an authentication bypass vulnerability in Citrix ADC and Gateway. CISA classifies it as a known exploited vulnerability and directs organizations to apply updates per vendor instructions. No additional technical details are provided in the supplied corpus.

Defensive priority

Urgent. This CVE appears in CISA’s Known Exploited Vulnerabilities catalog, with a remediation due date of 2023-01-03. Prioritize patching or vendor-directed mitigation for all affected Citrix ADC and Gateway systems.

Recommended defensive actions

  • Apply Citrix updates and follow the vendor’s security guidance for Citrix ADC and Gateway.
  • Identify all affected Citrix ADC and Gateway instances, including externally exposed deployments.
  • Verify remediation completed before the CISA KEV due date where possible, or as soon as operationally feasible.
  • Review authentication-related logs and access controls on affected systems as part of normal incident response and hardening.
  • Track this CVE in vulnerability management and exception workflows until fixed across the environment.

Evidence notes

This debrief is based on the supplied CISA KEV source item and the official resource links provided in the corpus. The corpus identifies the vulnerability as an authentication bypass affecting Citrix ADC and Gateway, with CISA dateAdded 2022-12-13 and dueDate 2023-01-03. No CVSS score or deeper technical exploit details were supplied, so this summary stays limited to the documented facts.

Official resources

Publicly disclosed in the provided CVE record with CISA KEV publication on 2022-12-13. This debrief does not add unsupported exploit or impact details beyond the supplied corpus.