CISA KEV · Known exploitedCritical

CVE-2019-11634

Citrix Workspace Application and Receiver for Windows

CVE-2019-11634 affects Citrix Workspace Application and Receiver for Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS
9.8
EPSS
8.03%
94.2% percentile
CISA KEV
Listed
Published
2019.05.23
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability8.03%
Technical severityCVSS 9.8

Vulnerability overview

CVE-2019-11634 affects Citrix Workspace Application and Receiver for Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product
Citrix Workspace Application and Receiver for Windows
Affected versions
4.9, < 1904
Fixed versions
1904

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03
  1. 1
    Identify

    Confirm that Citrix Workspace Application and Receiver for Windows and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-284
KEV added
2021.11.03
Ransomware use
확인됨
CVE-2019-11634 — Citrix Workspace Application and Receiver for Windows | SECUFOCUS NOW