🛡️ CVE-2023-31096
🟠 CVSS 7.8 — High ⚠️ Exploit Public CWE-787 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An issue was discovered in Broadcom) LSI PCI-SV92EX Soft Modem Kernel Driver through 2.2.100.1 (aka AGRSM64.sys). There is Local Privilege Escalation to SYSTEM via a Stack Overflow in RTLCopyMemory (IOCTL 0x1b2150). An attacker can exploit this to elevate privileges from a medium-integrity process to SYSTEM. This can also be used to bypass kernel-level protections such as AV or PPL, because exploit code runs with high-integrity privileges and can be used in coordinated BYOVD (bring your own vulnerable driver) ransomware campaigns.

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-787
Public Exploit ⚠️ Yes
Source NVD
Published 2023-10-10
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
lsi-pci-sv92ex-firmware — 2.2.100.1

References

Exploit, Third Party Advisory https://cschwarz1.github.io/posts/0x04/
Not Applicable https://www.broadcom.com
Exploit, Third Party Advisory https://cschwarz1.github.io/posts/0x04/
Not Applicable https://www.broadcom.com

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