CVE-2022-27518

CRITICAL9.8

CISA KEV

Published 2022-12-13 · Updated 2026-06-17 · Source secure@citrix.com

Summary

CVE-2022-27518 is a critical-severity (CVSS 9.8) vulnerability in Citrix Application Delivery Controller (ADC) and Gateway. CISA added it to the Known Exploited Vulnerabilities catalog on December 13, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by January 3, 2023. CISA does not currently list it as used in ransomware campaigns. Citrix has 27 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.

All 27 known-exploited Citrix vulnerabilities →

Description

Unauthenticated remote arbitrary code execution

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-664

CISA Known-Exploited Vulnerability

Product: Citrix — Application Delivery Controller (ADC) and Gateway

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

Date added: 2022-12-13 · Due: 2023-01-03

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Citrix vulnerabilities

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CVE-2026-88779
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added 2026-10-04
CVE-2026-88772
NetScaler — Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
added 2026-09-27
CVE-2026-88771
NetScaler — Citrix NetScaler Improper Input Validation Vulnerability
added 2026-09-27
CVE-2026-19490
NetScaler — Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
added 2026-09-09
CVE-2026-8452
NetScaler ADC and NetScaler Gateway — Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
added 2026-08-26
CVE-2026-3055
NetScaler — Citrix NetScaler Out-of-Bounds Read Vulnerability
added 2026-03-30

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