CVE-2019-19781

CRITICAL9.8Published on December 27, 2019

An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.

Actively exploited

  • In the CISA exploited-vulnerabilities catalogue since Nov 3, 2021
  • US federal agencies must remediate it by May 3, 2022 (BOD 22-01)
  • First attack observed 19 days after disclosure
  • Confirmed by sensors, not only by reports
  • Used in ransomware campaigns

Apply updates per vendor instructions.

Source: CISA KEV · Sep 1, 2026 Sep 1, 2026 Aug 31, 2026 Aug 30, 2026 Aug 27, 2026 Aug 26, 2026

CVSS score9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)CWE-22, CWE-22
Vendorscitrix

Affected products

VendorsProdottoVersioni
citrixapplication delivery controller firmware10.5
citrixapplication delivery controller-
citrixnetscaler gateway firmware10.5
citrixnetscaler gateway-
citrixgateway firmware13.0
citrixgateway-

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This product uses the NVD API but is not endorsed or certified by the NVD.

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