HOMEVULNERABILITIESCVE-2019-11634
HIGHCISA KEVIN THE WILD

CVE-2019-11634

Published: November 3, 2021

EPSS:31.16%probability of exploitation in 30 daysPercentile:96.6th

Official Description

Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

NVD Source

CISA KEV Advisory

Citrix Workspace Application and Receiver for Windows Remote Code Execution Vulnerability

Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

Added to KEV: 2021-11-03Federal patch deadline: 2022-05-03⚠ USED IN RANSOMWARE CAMPAIGNS
Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This remote code execution vulnerability in Citrix Workspace Application and Receiver for Windows results from local drive access preferences not being enforced. Its presence in the KEV catalog and an EPSS score of 0.31160 indicate a high likelihood of exploitation, making it an urgent concern for Citrix users.

This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog. Attackers are leveraging this flaw to achieve remote code execution.

Recommended Action

Update Citrix Workspace Application and Receiver for Windows to the latest secure versions. Review and enforce local drive access preferences to prevent unauthorized access and remote code execution.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2019-11634 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2019-11634 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
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All References (1)

Quick Facts

CVE IDCVE-2019-11634
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)31.16%
PublishedNov 3, 2021

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2019-11634 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.