CVE-2024-43685: microchip timeprovider_4100_firmware Insufficient Session Expiration
CVSS: 9.8v3.1CriticalAnalyzed
Published 04-10-2024Last modified 29-08-2025
Vulnerability summary
CVE-2024-43685 is a critical (CVSS 9.8) Insufficient Session Expiration vulnerability in microchip timeprovider_4100_firmware. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.9% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-10-2024PublishedVulnerability first disclosed.
- 29-08-2025Last modifiedVulnerability information updated.
Description
Improper Authentication vulnerability in Microchip TimeProvider 4100 (login modules) allows Session Hijacking.This issue affects TimeProvider 4100: from 1.0 before 2.4.7.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.7Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:H/R:U/V:C/RE:M/U:AmberSourcesAll 2 agree
- NVDNIST8.7HighCVSS: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
Critical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
EPSS trend
Probability
0.44%
Chance of exploitation in the next 30 days
Percentile
37%
Versus all other CVEs
30-day change
0.00 pp
From 0.44% on 20-09-2026
20-09-202620-10-2026
EPSS score0.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microchip1 product
- timeprovider_4100_firmware≥ 1.0, < 2.4.7
1 vendor · 1 product
References
2 links- www.microchip.com/en-us/…Vendor Advisory
- www.gruppotim.it/it/footer/red-team.htmlThird Party Advisory