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

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.

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

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