CVE-2021-33966Public exploitNetwork attack vector

Authenticated script execution via crafted login request

Published Jan 21, 2022 · Updated Aug 4, 2024

Cross-site scripting in Spotweb 1.4.9 allows remote authenticated users to execute script via a crafted GET request to the login page. The public CVE record and its referenced exploit do not identify the affected parameter or the code operation that places its value into the response. Exploitation requires a victim to interact with the crafted content and permits script execution in that victim's browser context, with no reported service interruption.

CVSS severity5.4
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Spotweb 1.4.9 allows remote authenticated users to execute script via a crafted GET request to the login page. The public CVE record and its referenced exploit do not identify the affected parameter or the code operation that places its value into the response. Exploitation requires a victim to interact with the crafted content and permits script execution in that victim's browser context, with no reported service interruption.

The record

CVE
CVE-2021-33966
Published
Jan 21, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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