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Known exploited vulnerability

CVE-2018-19953

mediumCVSS 3.1 6.1In CISA KEVRansomwareEPSS 31%Published · QNAP Systems Inc.

The short answer

CVE-2018-19953 affects QNAP Systems Inc. QTS and is rated medium (CVSS 6.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-05-24: attackers are using it, so patch it first.

What it is

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

Weakness: CWE-79, CWE-80.

Severity

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploited (CISA KEV)

Yes, since May 24, 2022

Federal due date Jun 14, 2022

EPSS, next 30 days

31%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

What CISA says to do

Apply updates per vendor instructions.

Affected products

QTS. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2018-19953 being exploited?

Yes. CISA added CVE-2018-19953 to its Known Exploited Vulnerabilities catalog on 2022-05-24, with a federal remediation due date of 2022-06-14. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2018-19953?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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