known ransomware use

QNAP Photo Station Externally Controlled Reference Vulnerability

Added to KEV
2022-09-08
Federal due date
2022-09-29
Vendor
QNAP
Product
Photo Station
EPSS
99.9th percentile (score 0.938, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2022-27593

CISA short description

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.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.