CVE-2026-15419: CWE-121: Stack-based Buffer Overflow in Silicon Labs silabser.sys driver
CVE-2026-15419 is a stack-based buffer overflow vulnerability in the Silicon Labs silabser.sys driver for CP210x devices version 11.5.0 and earlier. A local unprivileged user with a malicious device can send malformed packets to corrupt kernel pool memory, potentially leading to arbitrary code execution with escalated privileges. The vulnerability has a high severity score of 7. No patch or official fix information is provided in the available data.
AI Analysis
Technical Summary
The silabser.sys driver for CP210x devices up to version 11.5.0 contains a stack-based buffer overflow (CWE-121). This flaw allows a local unprivileged user possessing a malicious device to send malformed packets that corrupt kernel pool memory. Successful exploitation can result in arbitrary code execution with escalated privileges on the affected system. The CVSS 4.0 score is 7, indicating high severity. No known exploits are reported in the wild, and no patch or remediation details are provided.
Potential Impact
An attacker with local access and a malicious device can exploit this vulnerability to execute arbitrary code in kernel mode, gaining escalated privileges. This could compromise system integrity and security by allowing unauthorized control over the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, restrict local access and device installation to trusted users and devices only.
CVE-2026-15419: CWE-121: Stack-based Buffer Overflow in Silicon Labs silabser.sys driver
Description
CVE-2026-15419 is a stack-based buffer overflow vulnerability in the Silicon Labs silabser.sys driver for CP210x devices version 11.5.0 and earlier. A local unprivileged user with a malicious device can send malformed packets to corrupt kernel pool memory, potentially leading to arbitrary code execution with escalated privileges. The vulnerability has a high severity score of 7. No patch or official fix information is provided in the available data.
CVSS v4.0
Score 7.0high
Affected software
Silicon Labs
silabser.sys driver
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The silabser.sys driver for CP210x devices up to version 11.5.0 contains a stack-based buffer overflow (CWE-121). This flaw allows a local unprivileged user possessing a malicious device to send malformed packets that corrupt kernel pool memory. Successful exploitation can result in arbitrary code execution with escalated privileges on the affected system. The CVSS 4.0 score is 7, indicating high severity. No known exploits are reported in the wild, and no patch or remediation details are provided.
Potential Impact
An attacker with local access and a malicious device can exploit this vulnerability to execute arbitrary code in kernel mode, gaining escalated privileges. This could compromise system integrity and security by allowing unauthorized control over the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, restrict local access and device installation to trusted users and devices only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Silabs
- Date Reserved
- 2026-07-10T14:57:35.289Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa2eaf6555a9c516202b5d9
Added to database: 09/10/2026, 17:37:58 UTC
Last enriched: 09/10/2026, 17:58:15 UTC
Last updated: 09/10/2026, 17:58:15 UTC
Views: 4
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