Exploited CVEs / QNAP / CVE-2023-47565

CVE-2023-47565

QNAP VioStor NVR OS Command Injection Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2024-01-11 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: QNAP Security Advisories, linked below.

Risk summary

HighCISA KEV

8.8

CVSS base

73%

EPSS exploit probability

High

Severity

2023-12-21

Added to KEV

2024-01-11 (past due)

CISA due date

Actively exploited QNAP VioStor NVR vulnerability, High severity, CVSS 8.8. Added to the CISA KEV catalog 2023-12-21.

Senserva AI read on CVE-2023-47565 CISA required action Official fix for CVE-2023-47565 Admin questions

Senserva AI Opinion for CVE-2023-47565

CVE-2023-47565 lets an authenticated user inject OS commands over the network on QNAP VioStor NVR video recorders, which are typically internet-facing surveillance appliances that rarely get patched on schedule. It is confirmed exploited (CISA KEV, added 2023-12-21) and carries a 73 percent EPSS score, so the authentication requirement is not stopping attackers who reuse default or weak NVR credentials. Severity is High at CVSS 8.8.

Do this: Identify all VioStor NVR units, apply QNAP's firmware update, and remove them from direct internet exposure while rotating any default or shared login credentials.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2023-47565

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I run IT security. Facts for CVE-2023-47565, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2023-47565.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2023-47565: QNAP VioStor NVR OS Command Injection Vulnerability
- Affected: QNAP VioStor NVR
- Severity: High, CVSS 8.8; EPSS 30-day exploitation probability 73%
- Added to CISA KEV: 2023-12-21; federal remediation due 2024-01-11
- Ransomware-linked: no
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

The fix ships from the vendor: QNAP Security Advisories.

Do this now: Federal remediation deadline 2024-01-11; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2023-47565

Published: 2023-12-21
Last revised: 2023-12-21
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

2023-12-21 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 8.8; EPSS first scored at 73.3%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2024-01-11 (past due).

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

Official fix for CVE-2023-47565

The authoritative fix and affected-version list are published by the vendor. Find the VioStor NVR advisory on QNAP Security Advisories.

QNAP Security Advisories CISA KEV entry

Common questions about CVE-2023-47565

Is CVE-2023-47565 actively exploited?

Yes. CVE-2023-47565 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2023-12-21, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 73%.

What is the CISA deadline and required action for CVE-2023-47565?

CISA set the federal (BOD 22-01) remediation due date at 2024-01-11, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What fixes CVE-2023-47565?

The authoritative fix is in the vendor advisory: see QNAP Security Advisories for the patched VioStor NVR versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2023-47565?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-47565's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

Scope and sources

More exploited QNAP CVEs: CVE-2022-27593 CVE-2019-7195 CVE-2019-7192 CVE-2019-7194 CVE-2019-7193 CVE-2018-19949 CVE-2018-19953 CVE-2018-19943
All QNAP exploited CVEs on one page: QNAP vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.