Silabser Sys Driver
Monthly
Kernel pool memory corruption in Silicon Labs silabser.sys (the Windows kernel driver for CP210x USB-to-serial bridge devices) v11.5.0 and earlier allows a local unprivileged user who physically attaches a malicious CP210x-compatible USB device to escalate privileges to kernel-level code execution. The driver fails to validate USB device-supplied packet data before processing, enabling crafted malformed packets to corrupt Windows kernel pool allocations. No active exploitation is confirmed (not in CISA KEV) and no public exploit code has been identified at time of analysis.
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. No public exploit code and no CISA KEV listing have been identified at time of analysis.
Kernel denial-of-service in Silicon Labs' silabser.sys Windows 8 driver for CP210x USB-to-UART bridge devices allows any local unprivileged user to trigger a kernel crash by supplying incorrect driver settings. The root cause is CWE-369 (Divide by Zero) inside a kernel-mode driver, meaning exploitation produces a Blue Screen of Death (BSOD) and full system reboot. No public exploit code or active exploitation has been identified at time of analysis.
Kernel pool memory corruption in Silicon Labs silabser.sys (the Windows kernel driver for CP210x USB-to-serial bridge devices) v11.5.0 and earlier allows a local unprivileged user who physically attaches a malicious CP210x-compatible USB device to escalate privileges to kernel-level code execution. The driver fails to validate USB device-supplied packet data before processing, enabling crafted malformed packets to corrupt Windows kernel pool allocations. No active exploitation is confirmed (not in CISA KEV) and no public exploit code has been identified at time of analysis.
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. No public exploit code and no CISA KEV listing have been identified at time of analysis.
Kernel denial-of-service in Silicon Labs' silabser.sys Windows 8 driver for CP210x USB-to-UART bridge devices allows any local unprivileged user to trigger a kernel crash by supplying incorrect driver settings. The root cause is CWE-369 (Divide by Zero) inside a kernel-mode driver, meaning exploitation produces a Blue Screen of Death (BSOD) and full system reboot. No public exploit code or active exploitation has been identified at time of analysis.