CVE-2025-9497: Hardcoded Upgrade Decryption Passwords

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-28 · updated 2026-08-12
Weakness: CWE-798

Description

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.

Affected products

Microchip TimeProvider 4100: before 2.5.0 — fixed in 2.5.0

How to fix

Upgrade to a fixed version: Microchip TimeProvider 4100 2.5.0. Check the vendor advisory for mitigations.

References

https://www.gruppotim.it/en/footer/TIM-red-team.html
https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/timeprovider-4100-hardcoded-upgrade-decryption-passwords

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