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CVE-2025-66203

Lemon8866 Streamvault remote code execution

9.9 CRITICALPublic exploitEPSS 0.78%
  1. Published26 Dec 2025

Description

StreamVault is a video download integration solution. Prior to version 251126, a Remote Code Execution (RCE) vulnerability exists in the stream-vault application (SpiritApplication). The application allows administrators to configure yt-dlp arguments via the /admin/api/saveConfig endpoint without sufficient validation. These arguments are stored globally and subsequently used in YtDlpUtil.java when constructing the command line to execute yt-dlp. This issue has been patched in version 251126.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Lemon8866 Streamvault< 251126

Remediation

Fixed in
Lemon8866 Streamvault≥ 251126

References

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Frequently asked

Is CVE-2025-66203 being actively exploited?

CVE-2025-66203 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.78%.

How severe is CVE-2025-66203?

CVE-2025-66203 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 0.78% probability of exploitation.

Which products are affected by CVE-2025-66203?

Affected products include Lemon8866 Streamvault.

How do I fix CVE-2025-66203?

Upgrade affected software to a fixed version, for example Lemon8866 Streamvault 251126 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-66203 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.