CVE-2020-36196Network attack vector

Browser script execution in a user's session

Published Jul 1, 2021 · Updated Sep 16, 2024

Stored XSS in QNAP QuLog Center before 1.2.0 allows remote attackers to execute script in a user's browser through network input. QNAP identifies QuLog Center as the affected locus but does not disclose which input is stored or where output neutralization fails. Exploitation requires a user to view the stored content; the resulting script can read or modify data in that user's browser session.

CVSS severity6.1
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in QNAP QuLog Center before 1.2.0 allows remote attackers to execute script in a user's browser through network input. QNAP identifies QuLog Center as the affected locus but does not disclose which input is stored or where output neutralization fails. Exploitation requires a user to view the stored content; the resulting script can read or modify data in that user's browser session.

The record

CVE
CVE-2020-36196
Published
Jul 1, 2021
Updated
Sep 16, 2024
Vendor
Linn Products Limited
Product
QuLog Center
Classifications
CWE-80, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <1.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Linn Products Limited · QuLog Centerversion=unspecified <1.2.0

Published CVSS scores

4.3National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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