Quick answers
- Is CVE-2026-53564 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-53564 being exploited in the wild.
- How severe is CVE-2026-53564?
- Informational severity, published 13 October 2026.
- Which products and versions are affected?
- Citrix UniconOS before 2607.2 CR and before 2603 LTSR CU2.
- Is there a fix for CVE-2026-53564?
- Yes: fixed in UniconOS 2607.2 CR, 2603 LTSR CU2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-53564 attacked?
- It is in a network appliance.
- Am I affected by CVE-2026-53564?
- Check whether you run Citrix UniconOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: UniconOS 2607.2 CR, 2603 LTSR CU2
Technical details
An arbitrary file read and write vulnerability exists in Citrix UniconOS affecting versions before 2607.2 CR and before 2603 LTSR CU2. The vulnerability allows attackers to read and write arbitrary files on the system. The specific attack vector and authentication requirements are not detailed in the available advisory.
Affected products
- Citrix UniconOS before 2607.2 CR and before 2603 LTSR CU2