Medium severity · published Dec 24, 2020
CVE-2020-2503
If exploited, this stored cross-site scripting vulnerability could allow remote attackers to inject malicious code in File Station
5.4
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QE
Qes · Qnap
before 2.1.1; 2.1.1; 2.1.1; 2.1.1; 2.1.1; 2.1.1; +2 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2503
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-2503
Vendor Advisory
https://www.qnap.com/zh-tw/security-advisory/qsa-20-17
More from Qes
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CVE-2020-2504
If exploited, this absolute path traversal vulnerability could allow attackers to traverse files in File Station
7.2
CVE-2020-2499
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2.3
CVE-2020-2505
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages