CVE-2026-53563
Persistent Command Execution
No known exploitation. EPSS puts it in the 11th percentile. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- Citrix UniconOSAffected: < 2607.2 CRUpgrade to: 2607.2 CRAffected: < 2603 LTSR CU2Upgrade to: 2603 LTSR CU2Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
Vulnerability in Citrix UniconOS leading to Persistent Command Execution This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 11th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
- Attention now
Rising, driven by in-the-wild reports.
Lifecycle
5 events over 1 day, from the signal feeds we watch.
- Record updated
- Publishedweakness classified, att&ck mapped, record updated
Affected products
Technical detail
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
Watch the software you run.
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We'll flag the next CVE, public exploit or patch for UniconOS, not every advisory.
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