Unauthenticated privilege gain and sensitive-data access
Published Feb 3, 2021 · Updated Oct 21, 2025
Improper access control in QNAP Helpdesk before 3.0.3 allows remote attackers to gain privileges or read sensitive information. QNAP has not published the affected endpoint or the authorization decision that mishandles an untrusted request. No authentication or user interaction is required, and successful exploitation compromises application privileges or data confidentiality.
Summary
What happened
Improper access control in QNAP Helpdesk before 3.0.3 allows remote attackers to gain privileges or read sensitive information. QNAP has not published the affected endpoint or the authorization decision that mishandles an untrusted request. No authentication or user interaction is required, and successful exploitation compromises application privileges or data confidentiality.
The record
- CVE
- CVE-2020-2506
- Published
- Feb 3, 2021
- Updated
- Oct 21, 2025
- Vendor
- Linn Products Limited
- Product
- Helpdesk
- Classifications
- CWE-284, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 3, 2021CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <3.0.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Reported exploitation
- CISA Known Exploited Vulnerabilities Catalog listingknown exploited catalog
Technologies
Your stack
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Your stack
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