CVE-2019-6485

Citrix NetScaler Gateway 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 and Application Delivery Controller (ADC) 12.1 before build 50.31, 12.0 before build 60.9, 11.1 before build 60.14, 11.0 before build 72.17, and 10.5 before build 69.5 allow remote attackers to obtain sensitive plaintext information because of a TLS Padding Oracle Vulnerability when CBC-based cipher suites are enabled.

Published: 2019-02-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-6485 is rated Moderate Risk (53.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.31%). EPSS rose +1.87% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-6485

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.45% 2.31% +1.87%
2 2026-01-23 0.46% 0.45% -0.02%
3 2025-07-09 — 0.46% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-6485

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2019-6485

Affected software / configurations for CVE-2019-6485

Vendor Product Version Raw CPE
citrix netscaler_gateway_firmware 10.5 cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 11.0 cpe:2.3:o:citrix:netscaler_gateway_firmware:11.0:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 11.1 cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 12.0 cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 12.1 cpe:2.3:o:citrix:netscaler_gateway_firmware:12.1:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 10.5 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.5:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 11.0 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:11.0:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 11.1 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:11.1:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 12.0 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:12.0:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 12.1 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:12.1:*:*:*:*:*:*:*

References for CVE-2019-6485

URL Tags
http://www.securityfocus.com/bid/106783 Third Party Advisory VDB Entry
https://github.com/RUB-NDS/TLS-Padding-Oracles Product Third Party Advisory
https://support.citrix.com/article/CTX240139 Mitigation Patch Vendor Advisory
cvelogic Threat Intelligence