EUVD-2026-75625
GHSA-fq6h-3222-8vm9
Severity by source
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Physical device insertion is the sole access vector (AV:P); no OS privileges needed; impact is limited to partial kernel memory read with no integrity or availability consequence.
Primary rating from Vendor (Silabs).
CVSS VectorVendor: Silabs
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Kernel pool memory disclosure in Silicon Labs silabser.sys driver (v11.5.0 and earlier) allows a local attacker with physical device access to leak up to 145 bytes of uninitialized kernel pool memory by presenting a malicious USB device that sends malformed packets to the driver on Windows 10 and earlier. The CVSS 4.0 score of 2.4 reflects the narrow physical-access prerequisite (AV:P) and limited read-only confidentiality impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical presence is mandatory: the attacker must physically connect a purpose-built malicious USB device that enumerates as a CP210x-compatible USB-to-UART bridge to the target machine's USB port. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 2.4 (AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) accurately characterizes the threat: physical presence at the target machine is the gating requirement, and the impact is confined to a limited read-only kernel memory leak with no integrity or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the silabser.sys CP210x driver to a version newer than v11.5.0 by obtaining the corrected release from Silicon Labs' official driver distribution channel; the vendor advisory is available at the Silicon Labs Force.com document link referenced in this CVE. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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