CVE-2024-43687Public exploitNetwork attack vector

Arbitrary script execution via stored banner XSS

Published Oct 4, 2024 · Updated May 23, 2025

Stored XSS in Microchip TimeProvider 4100 firmware 1.0 before 2.4.7 and 2.4.16 before 2.5 allows remote authenticated users to run scripts. The /bannerconfig endpoint stores the txtcustom value without neutralizing executable markup, so browsers run injected JavaScript when rendering the banner page. Access to the separate management port and web application authentication are required to plant the payload, which runs for each user who loads the page until the device is reset.

CVSS severity6.1
Medium
EPSS probability0.83%
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 Microchip TimeProvider 4100 firmware 1.0 before 2.4.7 and 2.4.16 before 2.5 allows remote authenticated users to run scripts. The /bannerconfig endpoint stores the txtcustom value without neutralizing executable markup, so browsers run injected JavaScript when rendering the banner page. Access to the separate management port and web application authentication are required to plant the payload, which runs for each user who loads the page until the device is reset.

The record

CVE
CVE-2024-43687
Published
Oct 4, 2024
Updated
May 23, 2025
Vendor
Microchip Technology
Product
TimeProvider 4100
Classifications
CWE-79, CAPEC-63, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.0 <2.4.7
  2. Affected versionversion=2.4.16 <2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microchip Technology · TimeProvider 4100version=1.0 <2.4.7; version=2.4.16 <2.5

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.7Microchip TechnologyCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/S:P/AU:Y/R:U/V:D/U:Green

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')
CAPEC-63Cross-Site Scripting (XSS)
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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