Vulnerability in Silicon Labs Silabser.sys Driver

CVE-2026-15418

In the silabser.sys driver for CP210x devices v11.5.0 and earlier, a local unprivileged user with a malicious device can use malformed packets to leak up to 145 bytes of uninitialized kernel pool memory. This vulnerability affects Windows 10 and earlier.

Published · last modified .

EPSS exploit prediction

EPSS: 0.002 (10.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-15418: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001

Affected products

Weakness classification (CWE)

References