How severe is CVE-2020-2491?

CVE-2020-2491 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-2020-2491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2491?

CVE-2020-2491 affects Qnap Photo Station. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2491?

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

When was CVE-2020-2491 published?

CVE-2020-2491 was published on 2020-12-10 and last updated on 2026-06-17.

CVE-2020-2491

CVE-2020-2491 is a medium-severity vulnerability in Qnap Photo Station 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% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Qnap Photo Station
Published: 2020-12-10
Last modified: 2026-06-17

Description

This cross-site scripting vulnerability in Photo Station allows remote attackers to inject malicious code. QANP We have already fixed this vulnerability in the following versions of Photo Station. QTS 4.5.1: Photo Station 6.0.12 and later QTS 4.4.3: Photo Station 6.0.12 and later QTS 4.3.6: Photo Station 5.7.12 and later QTS 4.3.4: Photo Station 5.7.13 and later QTS 4.3.3: Photo Station 5.4.10 and later QTS 4.2.6: Photo Station 5.2.11 and later

Frequently asked questions

What is CVE-2020-2491?: This cross-site scripting vulnerability in Photo Station allows remote attackers to inject malicious code. QANP We have already fixed this vulnerability in the following versions of Photo Station. QTS 4.5.1: Photo Station 6.0.12 and later QTS 4.4.3: Photo Station 6.0.12 and later QTS 4.3.6: Photo Station 5.7.12 and later QTS 4.3.4: Photo Station 5.7.13 and later QTS 4.3.3: Photo Station 5.4.10 and later QTS 4.2.6: Photo Station 5.2.11 and later
How severe is CVE-2020-2491?: CVE-2020-2491 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-2020-2491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2491?: CVE-2020-2491 affects Qnap Photo Station. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2491?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-2491 published?: CVE-2020-2491 was published on 2020-12-10 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-20-15

Affected products (1)

cpe:2.3:a:qnap:photo_station:*:*:*:*:*:*:*:*

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