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Vulnerability record · CVE-2020-10111 · published 6 March 2020

CVE-2020-10111: Citrix gateway firmware http request smuggling vulnerability

Citrix · Gateway Firmware

Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests. NOTE: Citrix disputes the reported behavior as not a security issue. Citrix ADC only caches HTTP/1.1 traffic for performance optimization

7.5 CVSS 3.1 High EPSS 2.0% · top 20.0% CWE-444 · HTTP request smuggling
7.5CVSS 3.1 base score, v2 5.0
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests. NOTE: Citrix disputes the reported behavior as not a security issue. Citrix ADC only caches HTTP/1.1 traffic for performance optimization

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/156661/Citrix-Gateway-11.1-12.0-12.1-Cache-Bypass.html
http://seclists.org/fulldisclosure/2020/Mar/11 ExploitMailing ListThird Party Advisory
https://support.citrix.com/search Vendor Advisory
http://packetstormsecurity.com/files/156661/Citrix-Gateway-11.1-12.0-12.1-Cache-Bypass.html
http://seclists.org/fulldisclosure/2020/Mar/11 ExploitMailing ListThird Party Advisory
https://support.citrix.com/search Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-10111), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.