What is CVE-2022-27593?

CVE-2022-27593 is a critical-severity vulnerability in QNAP Photo Station, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 10.0/10. Published 2022-09-08.

How severe is CVE-2022-27593?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2022-27593 known to be exploited?

Yes. CVE-2022-27593 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-09-08), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Vulnerability in QNAP Photo Station

CVE-2022-27593

An externally controlled reference to a resource vulnerability has been reported to affect QNAP NAS running Photo Station. If exploited, This could allow an attacker to modify system files. We have already fixed the vulnerability in the following versions: QTS 5.0.1: Photo Station 6.1.2 and later QTS 5.0.0/4.5.x: Photo Station 6.0.22 and later QTS 4.3.6: Photo Station 5.7.18 and later QTS 4.3.3: Photo Station 5.4.15 and later QTS 4.2.6: Photo Station 5.2.14 and later

Published 2022-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.879 (99.8th percentile), scored 2026-10-15.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.879 · newest: 0.879 · change: 0.000

Affected products

QNAP Photo Station
QNAP Qts — versions 4.2.6, 4.3.3, 4.3.6
QNAP Systems Inc. Photo Station — versions unspecified

Weakness classification (CWE)

CWE-610 — Externally Controlled Reference to a Resource in Another Sphere

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-09-08. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-09-29.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

www.qnap.com/en/security-advisory/qsa-22-24 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-27593?: CVE-2022-27593 is a critical-severity vulnerability in QNAP Photo Station, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 10.0/10. Published 2022-09-08.
How severe is CVE-2022-27593?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2022-27593 known to be exploited?: Yes. CVE-2022-27593 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-09-08), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.