Vulnerability

CVE-2023-47565

High· 8.0KEVCVSS8EPSS87%

.rules3/5

QNAP VioStor NVR OS Command Injection Vulnerability

QNAP VioStar NVR contains an OS command injection vulnerability that allows authenticated users to execute commands via a network.

Threat signal

100/100

Severe

Severity

high

CVSS

8.0

EPSS

87%

Active

KEV

CISA KEV — actively exploited

884d overdue

AffectedQNAP — VioStor NVR

Added to KEV

2023-12-21

Federal patch due (BOD 22-01)

2024-01-11

Required action (CISA verbatim)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vendor advisory + references

CISA description: “QNAP VioStar NVR contains an OS command injection vulnerability that allows authenticated users to execute commands via a network.”

CVSS

v3.1Open in FIRST calculator →

8.0/ 10HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorAdjacentRequires same broadcast / collision domain (LAN, Bluetooth, MPLS).
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

86.8%

probability of exploitation in next 30 days

p99

higher than 99% of all CVEs

3-day trend↑ 0pp

Statistically about to be weaponized — top-tier triage urgency.

Vendor VEX

No VEX statements published for CVE-2023-47565. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: yes
impact: total
mission: support

Lifecycle

2023-12-21Added to CISA KEVransomware: Unknown
2023-12-21Published
2024-01-11Federal patch due (BOD 22-01)
2026-06-12Last modified1 source

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.