How severe is CVE-2020-2495?

CVE-2020-2495 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-2495 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2495?

CVE-2020-2495 primarily affects Qnap Quts Hero. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-2495?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-2495 published?

CVE-2020-2495 was published on 2020-12-10 and last updated on 2026-06-17.

CVE-2020-2495

CVE-2020-2495 is a medium-severity vulnerability in Qnap Quts Hero with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Qnap Quts Hero
Published: 2020-12-10
Last modified: 2026-06-17

Description

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code in File Station. QANP have already fixed these vulnerabilities in the following versions of QTS and QuTS hero. QuTS hero h4.5.1.1472 build 20201031 and later QTS 4.5.1.1456 build 20201015 and later QTS 4.4.3.1354 build 20200702 and later QTS 4.3.6.1333 build 20200608 and later QTS 4.3.4.1368 build 20200703 and later QTS 4.3.3.1315 build 20200611 and later QTS 4.2.6 build 20200611 and later

Frequently asked questions

What is CVE-2020-2495?: If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code in File Station. QANP have already fixed these vulnerabilities in the following versions of QTS and QuTS hero. QuTS hero h4.5.1.1472 build 20201031 and later QTS 4.5.1.1456 build 20201015 and later QTS 4.4.3.1354 build 20200702 and later QTS 4.3.6.1333 build 20200608 and later QTS 4.3.4.1368 build 20200703 and later QTS 4.3.3.1315 build 20200611 and later QTS 4.2.6 build 20200611 and later
How severe is CVE-2020-2495?: CVE-2020-2495 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-2495 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2495?: CVE-2020-2495 primarily affects Qnap Quts Hero. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-2495?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-2495 published?: CVE-2020-2495 was published on 2020-12-10 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-20-12

Affected products (2)

cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*

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