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CVE-2025-33031

24
FAUCET Score

CVE-2025-33031 is an improper certificate validation vulnerability affecting QNAP File Station 5, specifically versions prior to 5.5.6.4847. This high-severity vulnerability (CVSS 8.8) allows a remote attacker with a valid user account to compromise system security, leading to high impacts on confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is no evidence of active exploitation or significant community discussion, the vulnerability's high FAUCET Risk Score of 83/100 indicates its potential severity.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.5.6.4691, < 5.5.6.4847CPE matchmatch criteria
cpe:2.3:a:qnap:file_station:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.3HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 3rd percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

qnap.com / en/security-advisory/qsa-25-16
Vendor Advisory