Command Injection Vulnerability in QTS and QuTS hero
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
- Published
- Apr 17, 2021
- Updated
- Jun 16, 2026
- EPSS
- 34.0% · 98th percentile
- CWE
- CWE-77
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Report tools
Action score
79
This week
Don’t wait for the next maintenance window.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 10 / 30 · 34.0%
CISA SSVC decision
- Exploitation
- active
- Automatable
- yes
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Apr 11, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: May 2, 2022.
Affected systems
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- qnap qtsbefore 4.2.6
- qnap qts4.3.5 and later · before 4.3.6
- qnap qts4.4.0 and later · before 4.5.1
- qnap qts4.2.6
- qnap qts4.3.3.0174
- qnap qts4.3.3.0868
- qnap qts4.3.3.0998
- qnap qts4.3.3.1051
- qnap qts4.3.3.1098
- qnap qts4.3.3.1161
- qnap qts4.3.3.1252
- qnap qts4.3.3.1315
- qnap qts4.3.3.1386
- qnap qts4.3.3.1432
- qnap qts4.3.4.0358
- qnap qts4.3.4.0370
- qnap qts4.3.4.0372
- qnap qts4.3.4.0374
- qnap qts4.3.4.0387
- qnap qts4.3.4.0411
Versions reported by the vendor
Affected version ranges reported by the assigning authority (qnap). Independent of NVD's CPE analysis and usually ahead of it.
QNAP Systems Inc. QTS
- unspecified and later · before 4.3.4.1632 Build 20210324affected
- unspecified and later · before 4.5.2.1566 Build 20210202affected
- unspecified and later · before 4.5.1.1495 Build 20201123affected
- unspecified and later · before 4.3.6.1620 Build 20210322affected
- unspecified and later · before 4.3.3.1624 Build 20210416affected
- unspecified and later · before 4.2.6 Build 20210327affected
QNAP Systems Inc. QuTS hero
- unspecified and later · before h4.5.1.1491 build 20201119affected
Same product
qnap: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-19949If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands.KEV78This week
- CVE-2019-7193This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system.KEV73This week
- CVE-2018-19953If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code.KEV63This week
- CVE-2023-47218QTS, QuTS hero, QuTScloud60This week
- CVE-2017-6360QNAP QTS before 4.2.4 Build 20170313 allows attackers to gain administrator privileges and obtain sensitive information via unspecified vect59Plan
- CVE-2018-19943If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code.KEV57Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:14 | 2022-07-27 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- CISA KEV+359 d
- First PoC+466 d
- TodaySep 29, 2026+1992 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- LDAP InjectionCAPEC-136likelihood: High · High
- Command DelimitersCAPEC-15likelihood: High · High
- IMAP/SMTP Command InjectionCAPEC-183Medium
- Command InjectionCAPEC-248likelihood: Medium · High
- Manipulating Writeable Terminal DevicesCAPEC-40likelihood: High · Very High
- Exploiting Multiple Input Interpretation LayersCAPEC-43likelihood: Medium · High
- Manipulating Writeable Configuration FilesCAPEC-75likelihood: High · Very High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.qnap.com/en/security-advisory/qsa-21-05
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2509
Vendor advisories and official records. Exploit/PoC links are deliberately left out.