How severe is CVE-2022-27518?

CVE-2022-27518 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 6.7% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-27518: Unauthenticated remote arbitrary code execution

CISA Known Exploited Vulnerabilities

Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-12-13

Remediation due

2023-01-03

Required action
Apply updates per vendor instructions.

CISA notes
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

Description

Unauthenticated remote arbitrary code execution

Severity

CVSS 3.1 · CNA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Exploitation Context

as of October 13, 2026

All KEV statistics→

CISA added CVE-2022-27518 to the KEV catalog on the day its CVE record was published.
It is one of 27 Citrix entries in the CISA KEV catalog, and one of 5 added in 2022.
Its current EPSS score (6.7%) is higher than that of 21% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Citrix	Citrix Citrix Gateway, Citrix ADC	12.1 13.0 12.1 FIPs, NDcPP

References

1 Links

Other references

https://support.citrix.com/article/CTX474995

Record Details

Published

2022-12-13

Last updated

2025-10-21

Assigner (CNA)

Citrix

Credited to

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Tool categories

Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2022-27518