# CVE-2026-82671: IObit Unlocker privilege escalation in device control handler

Source: https://junglewise.ai/threats/cve-2026-82671-iobit-unlocker-privilege-escalation-in-device-control-handler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-31. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82671 · Severity: low · CVSS 3.4 · Published 2026-08-31

IObit Unlocker is a utility used to unlock and remove files that cannot be deleted normally by Windows. A vulnerability in the driver's device control handler allows a local attacker to manipulate privileged system functions, potentially enabling unauthorized file deletion or system interference that would normally be restricted.

Vendors: [IObit](https://junglewise.ai/threats/vendors/iobit).

## Quick answers

**Is CVE-2026-82671 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82671 being exploited in the wild.

**How severe is CVE-2026-82671?** Low severity, with a CVSS score of 3.4, published 31 August 2026.

**Which products and versions are affected?** IObit Unlocker 1.3.0.12.

**Is there a fix for CVE-2026-82671?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-82671 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-82671?** Check whether you run IObit Unlocker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A privilege management flaw exists in the IRP_MJ_DEVICE_CONTROL handler of the IObitUnlocker.sys kernel driver. The vulnerability affects the ZwTerminateProcess function implementation, allowing improper handling of process termination requests. The attack requires local system access and interaction with the vulnerable driver through device I/O control operations. An authenticated local attacker can exploit this to perform privileged operations that bypass normal security restrictions. The vendor was contacted early but did not provide a response or patch.

## Affected products

- IObit Unlocker 1.3.0.12

## Timeline

- 2026-08-31: disclosed

## References

- [https://vuldb.com/cve/CVE-2026-82671](https://vuldb.com/cve/CVE-2026-82671)
- [https://vuldb.com/submit/893879](https://vuldb.com/submit/893879)