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TI-2026-71904 Aliases CVE-2026-53562GHSA-8fmw-g43f-wf2q

Citrix UniconOS Local Privilege Escalation via Link Following

Priority LOW 38CWE-59Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Citrix UniconOS is affected before 2607 CR and before 2603 LTSR CU2. Improper link resolution before file access (CWE-59) lets a local user with low privileges reach files and affect confidentiality, integrity and availability without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00203 10th percentileScored 2026-11-07
Fix Fixed UniconOS (Citrix): 2607 CR, 2603 LTSR CU2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CitrixUniconOSbefore 2607 CR; before 2603 LTSR CU22607 CR, 2603 LTSR CU2Patch availableCNA
  • UniconOS VendorCitrix Affected before 2607 CR; before 2603 LTSR CU2 Fixed in 2607 CR, 2603 LTSR CU2 Patch available CNA

Remediation

Upgrade Citrix UniconOS to 2607 CR or 2603 LTSR CU2, which fix the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA UniconOS (Citrix) Fixed in 2607 CR, 2603 LTSR CU2

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-53562
  2. 2026-10-13 Alias added: GHSA-8fmw-g43f-wf2q
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2026-60195 Memory overflow vulnerability leading to Remote Code Execution or Denial of Service KEVCVSS 4.0CRITICAL 9.5
  • TI-2026-60194 Improper input validation in Citrix ADC KEVCVSS 4.0CRITICAL 9.5
  • TI-2023-10110 Improper access control in Citrix ShareFile Storage Zones Controller KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04571 Unauthenticated sensitive information disclosure in Citrix NetScaler ADC KEVCVSS 3.1CRITICAL 9.4
  • TI-2023-03284 Unauthenticated remote code execution in Citrix NetScaler ADC KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-10528 Unauthenticated remote arbitrary code execution in Citrix Gateway, Citrix ADC KEVCVSS 3.1CRITICAL 9.8
See all 418 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences