What is CVE-2025-9497?

CVE-2025-9497 is a critical-severity vulnerability in Microchip Time Provider 4100, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-28.

How severe is CVE-2025-9497?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Microchip Time Provider 4100

CVE-2025-9497

Use of Hard-coded Credentials vulnerability in Microchip Time Provider 4100 allows Malicious Manual Software Update.This issue affects Time Provider 4100: before 2.5.0.

Published 2026-03-28 · last modified 2026-08-12.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Microchip Time Provider 4100 — versions 0
Microchip Timeprovider 4100
Microchip Timeprovider 4100 Firmware

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 (vendor-advisory, Vendor Advisory)
dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 (Exploit, technical-description, Vendor Advisory)

Frequently asked questions

What is CVE-2025-9497?: CVE-2025-9497 is a critical-severity vulnerability in Microchip Time Provider 4100, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-28.
How severe is CVE-2025-9497?: Critical severity. CVSS v3 base score is 9.8 out of 10.