CVE intelligence and bounded remediation

CVE-2020-8195 — Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

Medium CVSS 6.5 CISA KEV

Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 resulting in limited information disclosure to low privileged users.

Severity
Medium
CVSS
6.5 (3.1)
Published
2020-07-10
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-20, CWE-22

Affected products

  • citrix / application_delivery_controller_firmware
  • citrix / netscaler_gateway_firmware
  • citrix / gateway_firmware
  • citrix / sd-wan_wanop

Showing 4 representative product identities from 14 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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