← Vulnerability feed

Vulnerability record · CVE-2017-17549 · published 13 December 2017

CVE-2017-17549: Citrix application delivery controller firmware information exposure vulnerability

Citrix · Application Delivery Controller Firmware

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 allow remote attackers to obtain sensitive information from the backend client TLS handshake by leveraging use of TLS with Client Certificates and a Diffie-Hellman Ephemeral (DHE) key exchange.

5.9 CVSS 3.0 Medium EPSS 1.6% · top 25.5% CWE-200 · Information exposure
5.9CVSS 3.0 base score, v2 4.3
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 allow remote attackers to obtain sensitive information from the backend client TLS handshake by leveraging use of TLS with Client Certificates and a Diffie-Hellman Ephemeral (DHE) key exchange.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/102177 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040011 Third Party AdvisoryVDB Entry
https://support.citrix.com/article/ctx230612 Vendor Advisory
http://www.securityfocus.com/bid/102177 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040011 Third Party AdvisoryVDB Entry
https://support.citrix.com/article/ctx230612 Vendor Advisory

Track CVE-2017-17549 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2022-27518Citrix ADC and Gateway unauthenticated remote code executionCVE-2022-27518 is an unauthenticated remote arbitrary code execution flaw in Citrix Application Delivery Controller (ADC) and Gateway firmware. The C…KEVEPSS 6.7%analysed9.8CVE-2019-19781Citrix ADC and Gateway directory traversal enabling code executionCitrix Application Delivery Controller (ADC) and Gateway versions 10.5, 11.1, 12.0, 12.1, and 13.0 contain a directory traversal flaw (CWE-22). The t…KEVEPSS 100%analysed6.5CVE-2020-8195Citrix ADC and Gateway improper input validation information disclosureCitrix ADC, Citrix Gateway, and Citrix SD-WAN WAN-OP contain improper input validation that can result in limited information disclosure to low privi…KEVEPSS 33%analysed6.5CVE-2020-8193Citrix ADC and Gateway improper access control allows unauthenticated endpoint accessCitrix ADC, Citrix Gateway, and Citrix SD-WAN WAN-OP contain an improper access control flaw (CWE-284/CWE-287) that lets unauthenticated users reach …KEVEPSS 88%analysed4.3CVE-2020-8196Citrix ADC and Gateway improper access control information disclosureCitrix ADC, Citrix Gateway and Citrix SD-WAN WAN-OP appliances contain an improper access control flaw (CWE-284/CWE-287) that allows limited informat…KEVEPSS 26%analysed10.0CVE-2015-5538Citrix netscaler application delivery controller firmware vulnerabilityMultiple unspecified vulnerabilities in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway before 10.1 Build 132.8, 10.5 be…EPSS 3.2%9.8CVE-2022-27510Citrix gateway authentication bypass via alternate path vulnerabilityUnauthorized access to Gateway user capabilitiesEPSS 1.1%9.8CVE-2022-27516Citrix gateway improper restriction of authentication attempts vulnerabilityUser login brute force protection functionality bypassEPSS 0.64%

Source: NIST National Vulnerability Database (record CVE-2017-17549), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.