CVE-2022-27518
Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 January 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Unauthenticated remote arbitrary code execution
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.86% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 13 December 2022 · due 3 January 2023
- Weakness
- CWE-664
- Affected
- citrix/application delivery controller firmware · citrix/gateway firmware
- Source
- secure@citrix.com
EPSS 6.9% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://www.citrix.com/blogs/2022/12/13/critical-security-update-now-available-for-citrix-adc-citrix-gateway/; https://nvd.nist.gov/vuln/detail/CVE-2022-27518
References
- https://support.citrix.com/article/CTX474995Vendor Advisory
- https://support.citrix.com/article/CTX474995Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-27518US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.