# CVE-2026-90493

## Summary

- **CVE ID:** CVE-2026-90493
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P)
- **CWE:** CWE-284, CWE-266
- **Published:** Sep 13, 2026
- **Last Modified:** Sep 15, 2026

## Description

A vulnerability was detected in Tonec Internet Download Manager up to 6.42 Build 63 on Windows. The impacted element is an unknown function of the file idmwfp.sys of the component Kernel Driver. The manipulation results in improper access controls. Attacking locally is a requirement. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Affected Products

- Tonec — Internet Download Manager (6.42 Build 63)

## References

- [CNA](https://vuldb.com/vuln/403081)
- [CNA](https://vuldb.com/vuln/403081/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90493)
- [CNA](https://vuldb.com/submit/891910)
- [CNA](https://github.com/KnCRJVirX/IDM_LPE_PoC/tree/main/poc)
- [CNA](https://github.com/KnCRJVirX/IDM_LPE_PoC/blob/main/report_en.md)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.11%
- **EPSS Percentile:** 1.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._