Is CVE-2026-15419 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-15419 being exploited in the wild.

How severe is CVE-2026-15419?

Informational severity, published 10 September 2026.

Which products and versions are affected?

Silicon Labs CP210x USB-to-Serial Driver (silabser.sys) 11.5.0 and earlier.

Is there a fix for CVE-2026-15419?

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-2026-15419 attacked?

It is attacked with local access or with physical access.

Am I affected by CVE-2026-15419?

Check whether you run Silicon Labs CP210x USB-to-Serial Driver (silabser.sys) 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.

CVE-2026-15419: Silicon Labs silabser.sys kernel pool corruption

CVE-2026-15419 · Severity: info · Published 2026-09-10

The silabser.sys driver for CP210x USB-to-serial devices contains a memory corruption vulnerability that allows an unprivileged user with physical access to a malicious USB device to crash the system or gain complete control with elevated privileges. This affects organizations using these devices for industrial automation, IoT gateways, and embedded system management, risking operational disruption and potential lateral movement within networks.

Vendors: Silicon Labs.

Quick answers

Is CVE-2026-15419 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-15419 being exploited in the wild.
How severe is CVE-2026-15419?: Informational severity, published 10 September 2026.
Which products and versions are affected?: Silicon Labs CP210x USB-to-Serial Driver (silabser.sys) 11.5.0 and earlier.
Is there a fix for CVE-2026-15419?: 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-2026-15419 attacked?: It is attacked with local access or with physical access.
Am I affected by CVE-2026-15419?: Check whether you run Silicon Labs CP210x USB-to-Serial Driver (silabser.sys) 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 kernel pool memory corruption vulnerability exists in silabser.sys (the Windows driver for Silicon Labs CP210x USB-to-serial devices) in versions 11.5.0 and earlier. The driver fails to properly validate malformed USB packets, allowing a malicious device connected locally to corrupt kernel heap structures. An unprivileged user with physical access to attach such a device can trigger arbitrary code execution with kernel-level privileges. The attack requires only local device connection and no authentication; patches are available in driver versions later than 11.5.0.

Affected products

Silicon Labs CP210x USB-to-Serial Driver (silabser.sys) 11.5.0 and earlier

Timeline

2026-09-10: disclosed

References

https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm0000100HA6IAM?operationContext=S1

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