CVE-2026-53562
Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS.
Published Oct 13, 2026 · corrected/updated Oct 14, 2026 · evidence confidence high
Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS. This issue affects UniconOS: before 2607 CR and before 2603 LTSR CU2.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-53562 is a high public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 8.5, EPSS 0.2%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-59. Sources contributing to this record: canada, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · NIST NVD
Detected
Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS. This issue affects UniconOS: before 2607 CR and before 2603 LTSR CU2.
Oct 14, 2026 · NIST NVD
Updated
Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS. This issue affects UniconOS: before 2607 CR and before 2603 LTSR CU2.
Sources
- Canadian Centre for Cyber SecurityGovernment advisoryCVE-2026-53562
Serial number: AV26-1034 Date: October 13, 2026 As of October 13, 2026, Citrix is affected by vulnerabilities in the following products: UniconOS Prior to 2603 LTSR CU2 Prior to 2607.2 CR XenServer Version 8.4 XenServer Version 9 The Cyber Centre encourages users and administrato
cyber.gc.ca - CVE.orgVulnerability recordCVE-2026-53562
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-53562
30-day exploitation probability 0.2%
first.org - NIST NVDVulnerability recordCVE-2026-53562
Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS. This issue affects UniconOS: before 2607 CR and before 2603 LTSR CU2.
nvd.nist.gov