CVE-2022-27593: in the CISA KEV catalogue
QNAP Photo Station Externally Controlled Reference Vulnerability. CISA added CVE-2022-27593 to the Known Exploited Vulnerabilities catalogue on 2022-09-08 with a default due date of 2022-09-29. Known ransomware campaign use: Known. Forensic triage flag: No.
Certain QNAP NAS running Photo Station with internet exposure contain an externally controlled reference to a resource vulnerability which can allow an attacker to modify system files. This vulnerability was observed being utilized in a Deadbolt ransomware campaign. (CISA description)
- Vendor / product
- QNAP Photo Station
- CWE
- CWE-610
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 88%, percentile 99 (scored 2026-11-04)
EPSS puts about 88 in 100 odds (88%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2022-27593 in the CISA KEV catalogue?
Yes. CISA added CVE-2022-27593 (QNAP Photo Station Externally Controlled Reference Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-09-08. CISA's default due date for it is 2022-09-29.
Is CVE-2022-27593 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2022-27593.
What should I do about CVE-2022-27593?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2022-27593