QNAP Network Attached Storage (NAS) known exploited vulnerabilities
We track 5 CVEs in QNAP Network Attached Storage (NAS). All of them are on CISA's Known Exploited Vulnerabilities catalog, meaning CISA has evidence of exploitation in the wild (listed 2022–2022). CISA flags 4 of them as used in ransomware campaigns. The most recent is CVE-2018-19953, added to KEV on .
Also listed as: Network-Attached Storage (NAS). CISA, NVD and vendor advisories name the same product differently; each CVE page keeps the wording from its source.
- CVEs tracked
- 5
- On CISA KEV
- 5
- Ransomware use
- 4
- Rated critical
- 3
Every QNAP Network Attached Storage (NAS) CVE we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV | Patch by |
|---|---|---|---|---|---|
| CVE-2018-19953 QNAP NAS File Station Cross-Site Scripting Vulnerabilityransomware use | [ MEDIUM ] | 6.1 | 29.0% | ||
| CVE-2018-19949 QNAP NAS File Station Command Injection Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 28.6% | ||
| CVE-2018-19943 QNAP NAS File Station Cross-Site Scripting Vulnerabilityransomware use | [ HIGH ] | 8.0 | 21.5% | ||
| CVE-2020-2509 QNAP Network-Attached Storage (NAS) Command Injection Vulnerability | [ CRITICAL ] | 9.8 | 34.0% | ||
| CVE-2021-28799 QNAP NAS Improper Authorization Vulnerabilityransomware use | [ CRITICAL ] | 10.0 | 78.3% |
Sorted by date added to KEV. Severity and CVSS as stated by NVD or the vendor; EPSS from FIRST.org. "Patch by" is CISA's BOD 22-01 deadline for US federal agencies, a useful priority signal for everyone else. Machine-readable: /api/v1/vendors/qnap.json.
Other QNAP products
Every row links to its CVE record with the CISA required action, catalog coverage and primary sources. We describe impact and remediation only; no exploit code. See the full KEV tracker or compare KEV catalogs.