Cyber Resilience

CVE-2024-43683

Open Redirect in Microchip Timeprovider 4100 Firmware 1.0 – 2.4.7

Open Redirect
Published
04 October 2024
Modified
01 November 2024
CVSS Score v4 8.7
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:C/RE:M/U:Amber
EPSS Score 0.0021 12th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2024-43683 is a high-severity Open Redirect (CWE-601) vulnerability in Microchip Timeprovider 4100 Firmware. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Phishing (T1566); ranked at the 12th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Microchip TimeProvider 4100 allows XSS Through HTTP Headers.This issue affects TimeProvider 4100: from 1.0.

CWE(s)
CWE-601

Related Threats

MITRE ATT&CK Enterprise Techniques

T1566 Phishing Initial Access
Adversaries may send phishing messages to gain access to victim systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-43687Same product: Microchip Timeprovider 4100
CVE-2024-43686Same product: Microchip Timeprovider 4100
CVE-2026-12622Same vendor: Microchip
CVE-2025-47901Same product: Microchip Timeprovider 4100
CVE-2025-47900Same product: Microchip Timeprovider 4100
CVE-2025-47902Same product: Microchip Timeprovider 4100
CVE-2024-43685Same product: Microchip Timeprovider 4100
CVE-2024-43684Same product: Microchip Timeprovider 4100
CVE-2025-9497Same product: Microchip Timeprovider 4100
CVE-2024-9054Same product: Microchip Timeprovider 4100

Affected Assets

microchip
timeprovider 4100 firmware
1.0 — 2.4.7

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.7.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly checks and rejects untrusted redirect targets before they are used in a response.

AC-4 Information Flow Enforcement partial match

Information flow enforcement can restrict redirects to only approved/trusted destinations, stopping untrusted user-supplied URLs from being followed.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and untrusted-redirect controls that prevent CWE-601.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.23 Web filtering partial match
mitigates

Preventing access to attacker-controlled or malicious sites stops users from being redirected to untrusted locations via open-redirect or phishing links.

References