Is CVE-2020-2503 in the CISA KEV catalog?

No. CVE-2020-2503 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-2503?

CVE-2020-2503 has a CVSS v3 base score of 9.0 (CRITICAL).

What is the EPSS score for CVE-2020-2503?

CVE-2020-2503 has an EPSS score of 0.78% (51th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2020-2503

CRITICAL

9.0

CVSS v3

NVD

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.

CWE-79Cross-Site Scripting (XSS)CWE-80 CWE-749

How to fix

Remediation Available

qesNVD

Affected:< 2.1.1Fixed in:2.1.1CVE-2020-2503derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.78%probability of exploitation in 30 days

51stpercentile

Moderate risk: more likely to be exploited than 51% of all known CVEs.

References

Vendor Advisory1

qnap.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.