CVE-2026-57851
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
The KernCoreLib64.sys kernel driver in MSI Feature Manager has a local privilege escalation vulnerability. Any locally logged-on user can perform arbitrary physical memory read/write and unrestricted I/O port operations via exposed IOCTL handlers.
Risk Assessment
Attackers can manipulate kernel objects, bypass Protected Process Light protections, and disable security software, leading to full system compromise.
Recommendation
Immediately update MSI Feature Manager to the latest patched version. Until then, restrict access to the driver by blocking unauthorized IOCTL operations.
Related vulnerabilities
- CVE-2026-85440Critical
Pre-authentication heap overflow vulnerability in MOOS core-moos through 10.4.0 in MOOSCommPkt packet handling. Attackers can declare a negative packet length, leading to writing arbitrary data past a four-byte heap buffer during the HandShake phase.
- CVE-2026-85438Critical
Buffer overflow vulnerability in MOOS-IvP through 24.8.1 in StringToIvPFunction(), where dimension, piece, and degree counts from encoded BHV_IPF payloads are used without validation. Attackers can supply crafted payloads to write past the IvPBox weight array.
- CVE-2026-85437Critical
Multiple buffer overflow vulnerabilities in MOOS-IvP through 24.8.1 in IvP function string decoders that trust attacker-controlled length fields. Crafted encoded strings can overflow heap and stack buffers, potentially enabling remote code execution.
- CVE-2026-85435Critical
MOOS-IvP uFldNodeBroker through 24.8.1 fails to validate the source of TRY_SHORE_HOST messages, allowing any publisher to enroll attacker-controlled shore routes. Attackers can receive bridged vehicle traffic including sensor data and control information.
- CVE-2026-85434Critical
MOOS-IvP uFldShoreBroker through 24.8.1 fails to verify node ping authenticity before creating outbound bridge routes. Attackers can publish NODE_BROKER_PING messages with crafted HostRecord data to redirect bridged variables to attacker-controlled addresses.
- CVE-2026-85433Critical
MOOS essential-moos pShare through 10.0.1 fails to properly authorize PSHARE_CMD messages, allowing any publisher to reconfigure network routes and listeners at runtime. Attackers can send crafted messages to open new listeners and redirect or duplicate traffic.
- CVE-2026-85430Critical
MOOS essential-moos through 10.0.1 contains an authentication bypass in pShare that accepts UDP datagrams from any source and republishes them with attacker-claimed identity. Attackers can inject messages under spoofed identities or crash the pShare process.
- CVE-2026-85428Critical
MOOS core-moos through 10.4.0 contains an authentication bypass in the optional MOOSDB HTTP server, allowing unauthenticated clients to write variables. Attackers can modify MOOS variables including actuator and override commands without authentication.
- CVE-2026-85426Critical
MOOS-IvP uMemWatch through 24.8.1 constructs shell commands from attacker-chosen MOOS client names without sanitization. Attackers can inject shell metacharacters to execute arbitrary commands as the uMemWatch process user.
- CVE-2026-85425Critical
MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in the SAY_MOOS variable handler that passes unsanitized text to a shell command. Attackers can publish messages with command substitution syntax to execute arbitrary commands as the iSay process user.
Original NVD description (English source)
MSI Feature Manager contains a local privilege escalation vulnerability in the KernCoreLib64.sys kernel driver that allows any locally logged-on user to perform arbitrary physical memory read/write and unrestricted I/O port operations by accessing exposed IOCTL handlers without administrator privileges. Attackers can exploit the accessible device object through IOCTL handlers to manipulate kernel objects, tamper with kernel-mode callbacks, bypass Protected Process Light protections, and disable security software.

