Exploited vulnerability · CISA KEV

Is CVE-2018-19953 exploited? Yes: in CISA KEV since 24 May 2022

Gociux · QNAP Network Attached Storage (NAS) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-19953, QNAP NAS File Station Cross-Site Scripting Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 24 May 2022, 573 days after it was published. It is known to be used in ransomware campaigns. It affects QNAP Network Attached Storage (NAS). If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

A cross-site scripting vulnerability affecting QNAP NAS File Station could allow remote attackers to inject malicious code.

What to do

1. Check whether you run it. Look for Network Attached Storage (NAS) in your asset inventory, including appliances and cloud images. Stack check lists every exploited QNAP CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 28 Oct 2020.
4. Get told next time. Email alerts when CISA adds a CVE for QNAP.

Other exploited CVEs in Network Attached Storage (NAS)

• CVE-2018-19949: QNAP NAS File Station Command Injection Vulnerability (24 May 2022)
• CVE-2018-19943: QNAP NAS File Station Cross-Site Scripting Vulnerability (24 May 2022)
• CVE-2021-28799: QNAP NAS Improper Authorization Vulnerability (31 Mar 2022)

References

• nvd.nist.gov/vuln/detail/CVE-2018-19953

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2022 · QNAP scorecard · act-now radar.