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CVE-2020-2495

22
FAUCET Score

CVE-2020-2495 is a cross-site scripting (XSS) vulnerability affecting QNAP QTS and QuTS hero operating systems, specifically within the File Station component. Successful exploitation could allow remote attackers to inject malicious code. The vulnerability has a CVSS score of 6.1 (Medium), indicating a network-based attack requiring user interaction with low attack complexity, potentially leading to limited impact on confidentiality and integrity. While QNAP has released patches, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion beyond a single media report.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.5.1.1472CPE matchmatch criteria
cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*
< 4.5.1.1456CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
< 4.4.3.1354CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
< 4.3.6.1333CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
< 4.3.4.1368CPE matchmatch criteria
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 72nd percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

qnap.com / en/security-advisory/qsa-20-12
Vendor Advisory