CVE-2020-2503
Stored cross-site scripting vulnerability in QES
MEDIUM
5.4
CVSS Score
Published: December 24, 2020 at 01:39 AM UTC
Updated: June 17, 2026 at 03:12 AM UTC
1 product affected across 1 vendorQES
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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.8%
Description
If exploited, this stored cross-site scripting vulnerability could allow remote attackers to inject malicious code in File Station. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.1.12.1.12.1.1 build_202002112.1.1 build_202003032.1.1 build_202003192.1.1 build_202004242.1.1 build_202005152.1.1 build_20200811
Affected range stops below 2.1.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.qnap.com/zh-tw/security-advisory/qsa-20-17CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79CWE-80CWE-749
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