SECUFOCUSNOW
Home›CVE index›CVE-2020-2509
CISA KEV · Known exploitedCritical

CVE-2020-2509

QNAP QNAP Network-Attached Storage (NAS)

A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later

CVSS
9.8
EPSS
33.4%
98.2% percentile
CISA KEV
Listed
Published
2021.04.17
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability33.4%
Technical severityCVSS 9.8

Vulnerability overview

A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later

Affected product and versions

Product
QNAP QNAP Network-Attached Storage (NAS)
Affected versions
unspecified, < 4.2.6, >= 4.3.5 < 4.3.6, >= 4.4.0 < 4.5.1, 4.2.6, 4.3.3.0174, 4.3.3.0868, 4.3.3.0998, 4.3.3.1051, 4.3.3.1098, 4.3.3.1161, 4.3.3.1252, 4.3.3.1315, 4.3.3.1386, 4.3.3.1432, 4.3.4.0358, 4.3.4.0370, 4.3.4.0372, 4.3.4.0374, 4.3.4.0387
Fixed versions
4.2.6, 4.3.6, 4.5.1, h4.5.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.02
  1. 1
    Identify

    Confirm that QNAP QNAP Network-Attached Storage (NAS) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-77, CWE-78
KEV added
2022.04.11
Ransomware use
미확인
CVE-2020-2509 — QNAP QNAP Network-Attached Storage (NAS) | SECUFOCUS NOW