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CVE-2025-66203

31
FAUCET Score

CVE-2025-66203 is a critical Remote Code Execution (RCE) vulnerability affecting StreamVault, a video download integration solution, prior to version 251126. This flaw allows authenticated administrators to inject malicious yt-dlp arguments via the /admin/api/saveConfig endpoint due to insufficient validation, leading to arbitrary command execution. With a CVSS score of 9.9, this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, enabling complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 251126CPE matchmatch criteria
cpe:2.3:a:lemon8866:streamvault:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 42nd percentile among its peer group of 462 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / lemon8866/StreamVault/releases/tag/251226
ProductRelease Notes
github.com / lemon8866/StreamVault/security/advisories/GHSA-c747-q388-3v6m
ExploitVendor Advisory