ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-53562

Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS.

Published Oct 13, 2026 · catalog updated Oct 14, 2026 · Improper link resolution before

Check if you run it

No confirmed exploitation is on record for CVE-2026-53562. EPSS is 0.15%. Act only if a listed version of Improper link resolution before is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Improper link resolution before).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Not established
Affected products
See sources for product scope

Improper link resolution before file access ('link following') vulnerability in Citrix UniconOS. This issue affects UniconOS: before 2607 CR and before 2603 LTSR CU2.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-53562

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-53562. EPSS is 0.15%. Act only if a listed version of Improper link resolution before is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-59: Link Following. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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.

  1. 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.

  2. 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

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.