CVE-2021-47858Public exploitNetwork attack vector

Privileged-session script execution via stored start_addr input

Published Jan 21, 2026 · Updated Jan 21, 2026

Stored XSS in Genexis Platinum 4410 firmware 1.31A allows remote authenticated users to inject scripts through the management interface. The Security Management handler stores the start_addr value without neutralizing executable markup and renders it when the page is revisited. Any authenticated user can plant a payload that executes in privileged users' browser sessions when they open that page.

CVSS severity5.1
Medium
EPSS probability0.25%
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 Genexis Platinum 4410 firmware 1.31A allows remote authenticated users to inject scripts through the management interface. The Security Management handler stores the start_addr value without neutralizing executable markup and renders it when the page is revisited. Any authenticated user can plant a payload that executes in privileged users' browser sessions when they open that page.

The record

CVE
CVE-2021-47858
Published
Jan 21, 2026
Updated
Jan 21, 2026
Vendor
Genexis
Product
Platinum 4410
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 2026Record 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=Firmware 1.31A

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Genexis · Platinum 4410version=Firmware 1.31A

Published CVSS scores

7.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007Command and Scripting Interpreter: JavaScript

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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