Threats / QNAP / CVE-2023-47565
CVE-2023-47565
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
QNAP VioStor NVR vulnerability
QNAP VioStor NVR contains an OS command injection vulnerability allowing authenticated users to execute arbitrary commands over the network.
Verdict
Today item — known-exploited.
Authenticated attackers can inject OS commands through VioStor NVR interfaces to achieve code execution. Active exploitation in the wild and high EPSS score indicate immediate risk to deployed systems.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
21 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-12-21).
Probability (EPSS)
EPSS 0.73277 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: QNAP, VioStor NVR. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-78 OS Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I authenticate to the VioStor NVR management interface using valid credentials or by exploiting weak authentication.
Business
Insider threats or credential compromise create a direct pathway to system compromise without external detection.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I craft malicious input containing OS command sequences in vulnerable parameters accepted by the NVR application.
Business
The application fails to sanitize user input, allowing injection of arbitrary shell commands into system execution contexts.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary commands with the privileges of the NVR service process to install backdoors, exfiltrate data, or pivot to other network systems.
Business
Complete compromise of surveillance infrastructure enables data theft, system manipulation, and lateral movement across the network.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05