# CVE-2026-89062: Lenovo Energy Management driver out-of-bounds write

Source: https://junglewise.ai/threats/cve-2026-89062-a-potential-out-of-bounds-write-vulnerability-was-reported-in-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-16. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-89062 · Severity: medium · CVSS 5.5 · Published 2026-10-16

The Lenovo Energy Management driver, a system utility that optimizes power consumption on Lenovo devices, contains an out-of-bounds write flaw. A local user with authenticated access could exploit this vulnerability to trigger a system crash (blue screen), causing a denial of service and potential data loss or business disruption.

Vendors: [Lenovo](https://junglewise.ai/threats/vendors/lenovo).

## Quick answers

**Is CVE-2026-89062 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89062 being exploited in the wild.

**How severe is CVE-2026-89062?** Medium severity, with a CVSS score of 5.5, published 16 October 2026.

**Which products and versions are affected?** Lenovo Energy Management driver.

**Is there a fix for CVE-2026-89062?** 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-2026-89062 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-89062?** Check whether you run Lenovo Energy Management driver. 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

An out-of-bounds write vulnerability exists in the Lenovo Energy Management driver, accessible to authenticated local users. Exploitation allows writing data outside intended memory boundaries, resulting in a system blue screen (kernel crash). The attack requires local access and prior authentication on the target system.

## Affected products

- Lenovo Energy Management driver

## Timeline

- 2026-10-16: disclosed

## References

- [https://support.lenovo.com/us/en/product_security/LEN-218444](https://support.lenovo.com/us/en/product_security/LEN-218444)