CVE-2022-27593 | DeadBolt Ransomware

Exp

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 update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-27593 is rated Critical Active Threat (100/100): CVSS Critical severity, with high exploitation likelihood (EPSS 93.78%, 100th percentile). CISA KEV confirms active exploitation (added 2022-09-08) affecting QNAP / Photo Station. a weakness (CWE-610) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2022-27593

Name: QNAP Photo Station Externally Controlled Reference Vulnerability · CISA KEV detail

Exploit added: 2022-09-08

Action due: 2022-09-29

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2022-27593

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-04 93.12% 93.78% +0.67%
2 2026-03-22 92.96% 93.12% +0.16%
3 2026-02-02 — 92.96% —

Full EPSS history (39 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-27593

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2022-27593

Affected software / configurations for CVE-2022-27593

Vendor Product Version Raw CPE
qnap photo_station < 5.2.14 cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*
qnap photo_station < 5.4.15 cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*
qnap photo_station < 5.7.18 cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*
qnap photo_station < 6.0.22 cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*
qnap photo_station < 6.1.2 cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*

References for CVE-2022-27593

cvelogic Threat Intelligence