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CVE-2023-47565

92
FAUCET Score

CVE-2023-47565 is an OS command injection vulnerability impacting legacy QNAP VioStor NVR models running QVR Firmware 4.x, allowing authenticated users to execute arbitrary commands over the network. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise. Notably, this CVE is actively exploited in the wild, as confirmed by its presence in the KEV catalog and multiple media reports detailing its use by botnets, despite the lack of public exploit code on platforms like Metasploit or ExploitDB. The vulnerability has garnered significant community attention, with numerous discussions and mentions across various platforms.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 5.0.0CPE matchmatch criteria
cpe:2.3:o:qnap:qvr_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.0HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
73.28%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Dec 21, 2023
This CVE's current EPSS score of 0.7328 is in the 99th percentile among its peer group of 17,823 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

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
qnap.com / en/security-advisory/qsa-23-48
Vendor Advisory