EUVD-2026-44895
GHSA-95hw-w6xx-75xp
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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
Local vector and low-privileged local session required (AV:L, PR:L); no user interaction and low complexity; full C/I/A impact on the host with no scope change.
Primary rating from Vendor (ESET).
CVSS VectorVendor: ESET
Lifecycle Timeline
2DescriptionCVE.org
A local privilege escalation vulnerability in ESET Inspect Connector. The vulnerability was caused by improper authentication in an IPC channel.
AnalysisAI
Local privilege escalation in ESET Inspect Connector for Windows lets a low-privileged local user escalate to elevated (SYSTEM-level) privileges by abusing an improperly authenticated ALPC (Asynchronous Local Procedure Call) IPC channel. The affected component is the endpoint agent that links ESET Inspect (EDR) to protected Windows hosts; a non-privileged process can issue unauthenticated requests to a privileged service endpoint that fails to verify the caller. The issue was reported and fixed by ESET, is not listed in CISA KEV, and has no public exploit identified at time of analysis.
Technical ContextAI
The vulnerability lives in the inter-process communication surface of the ESET Inspect Connector, ESET's EDR sensor/agent for Windows that forwards telemetry and receives management commands. ESET's advisory identifies the transport as Windows ALPC (Advanced/Asynchronous Local Procedure Call), a high-performance kernel-mediated IPC mechanism used between client processes and privileged services. The root cause maps to CWE-269 (Improper Privilege Management): the privileged ALPC server endpoint does not properly authenticate the identity or privilege level of connecting clients, so a low-integrity local process can invoke functionality intended only for higher-privileged callers. Because ALPC ports are reachable by any local process that can open the named port, missing caller authentication collapses the security boundary between an ordinary user context and the SYSTEM-level service. The affected CPE is cpe:2.3:a:eset,_spol._s.r.o.:eset_inspect_connector, i.e. the Connector application component rather than the broader ESET endpoint suite.
RemediationAI
Patch available per vendor advisory: update ESET Inspect Connector for Windows to the fixed version referenced in ESET Customer Advisory ca8970 (https://support.eset.com/en/ca8970-eset-customer-advisory-local-privilege-escalation-via-unauthenticated-alpc-in-eset-inspect-connector-for-windows-fixed); the provided data does not include an exact fixed build number, so confirm the target version against that advisory before deployment. Because ESET manages agent versions centrally, roll the update through the ESET PROTECT/management console to all endpoints running the Connector rather than manually per host. As this is a local-only escalation, interim compensating controls should focus on limiting who can obtain a local session on affected hosts: enforce least-privilege on endpoints, restrict interactive/remote logon rights to trusted administrators, and monitor for unexpected local process activity interacting with ESET service endpoints - with the trade-off that these controls reduce but do not eliminate risk from any already-authenticated local user or malware running in a user context. Given the component IS the security agent, prioritize patching over relying on workarounds, since disabling the Connector would degrade EDR coverage.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today