CVE-2020-2497

What it is

If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code in System Connection Logs. 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

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-12-10 04:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:12 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.0% in the next 30 days (EPSS).
• Severity: 6.1 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-12-10 04:15 UTC

Last modified

2026-06-17 03:12 UTC

Exploit probability

1.0% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Modified

Affected

• Qnap Quts Hero < 4.5.1.1472
• Qnap Qts < 4.5.1.1456
• Qnap Qts < 4.4.3.1354
• Qnap Qts < 4.3.6.1333
• Qnap Qts < 4.3.4.1368
• Qnap Qts < 4.3.3.1315
• Qnap Qts < 4.2.6

Attack profile CVSS 3.1 · 6.1

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-2497.md and follow it. Check whether this project is affected by CVE-2020-2497. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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