CVE-2020-2504: qnap systems inc. qes Improper Input Validation
CVSS: 7.5v3.1HighModified
Published 24-12-2020Last modified 17-09-2024
Vulnerability summary
CVE-2020-2504 is a high (CVSS 7.5) Improper Input Validation vulnerability in qnap systems inc. qes. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.1% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.03%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-12-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
If exploited, this absolute path traversal vulnerability could allow attackers to traverse files in File Station. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSources2 sources · 5.8–7.5
- CVE.orgCNA5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:NDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.03% on 20-09-2026
20-09-202620-10-2026
EPSS score1.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- CWE-73External Control of File Name or PathThe product allows user input to control or influence paths or file names that are used in filesystem operations.
- CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Affected systems
Qnap1 product
- qes< 2.1.1 | 2.1.1 | 2.1.1:build_20200211 | 2.1.1:build_20200303 | 2.1.1:build_20200319 | 2.1.1:build_20200424 | 2.1.1:build_20200515 | 2.1.1:build_20200811
Qnap systems inc.1 product
- qes≥ unspecified, < 2.1.1
2 vendors · 2 products