CVEs / CVE-2022-27518
CVE-2022-27518: Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
- Known exploited in the CISA KEV catalog since 13 Dec 2022
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 6.85% chance of exploitation in the next 30 days, higher than 94% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
Description
Unauthenticated remote arbitrary code execution
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Citrix Citrix Gateway, Citrix ADC | 12.1 | — |
| Citrix Citrix Gateway, Citrix ADC | 13.0 | — |
| Citrix Citrix Gateway, Citrix ADC | 12.1 FIPs, NDcPP | — |
Exploitation
| In CISA KEV since | 13 Dec 2022 |
|---|---|
| Due date for US federal agencies | 3 Jan 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-664 |
References
- CVE-2022-27518 on NVD
- CVE-2022-27518 in the CISA KEV catalog
- https://www.citrix.com/blogs/2022/12/13/critical-security-update-now-available-for-citrix-adc-citrix-gateway/ (cited by CISA)
- https://support.citrix.com/article/CTX474995 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-27518 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.