EUVD-2026-63896
GHSA-2v74-j8j5-fw75
Severity by source
CVSS:4.0/AV:L/AC:H/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 access only; high complexity due to race condition; low-privilege attacker; scope changes to SYSTEM; full confidentiality, integrity, and availability impact on the host.
Primary rating from Vendor (ncsc).
CVSS VectorVendor: ncsc
CVSS:4.0/AV:L/AC:H/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
Lifecycle Timeline
2DescriptionCVE.org
Remote Utilities Host <=7.7.3.0 sets insecure ACLs on all DLL files in the installation directory (C:\Program Files (x86)\Remote Utilities - Host\), granting FULL CONTROL (F) to the built-in Everyone group (BUILTIN\Everyone, S-1-1-0). A Windows service running as NT AUTHORITY\SYSTEM loads DLLs from this directory. The DLLs are file-locked at runtime, but a race window exists when the service is stopped (e.g. during a software update or following a crash), during which a local unprivileged attacker can replace a DLL with a malicious payload. Upon service restart, the payload executes as NT AUTHORITY\SYSTEM. The DLL confirmed as actively loaded during testing is libasset32.dll. Additional DLLs in the same directory (eventmsg.dll, libcodec32.dll, vp8encoder.dll, vp8decoder.dll, webmvorbisdecoder.dll, webmvorbisencoder.dll, webmmux.dll) share identical insecure permissions.
AnalysisAI
DLL hijacking in Remote Utilities Host ≤7.7.3.0 allows any local, unprivileged Windows user to achieve NT AUTHORITY\SYSTEM-level code execution by replacing service DLLs during a race window. The installer incorrectly grants BUILTIN\Everyone FULL CONTROL over all DLL files in the installation directory - including libasset32.dll and seven additional codec and multimedia libraries - enabling overwrite by any local account. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have an active local Windows logon session - any non-privileged account suffices; administrator rights are not required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate-to-high for any multi-user Windows environment running Remote Utilities Host. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is upgrading to a patched version of Remote Utilities Host as documented at https://www.remoteutilities.com/product/release-notes.php#windows - the exact patched version number is not independently confirmed in the available intelligence and must be verified directly from the vendor release notes. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Immediately inventory all systems running Remote Utilities Host 7.7.3.0 and earlier using endpoint detection tools; contact Remote Utilities vendor directly for patch timeline and technical guidance; restrict local interactive logon to administrative accounts only on all affected systems using Windows Group Policy; review Security event logs (Event ID 4624/4625) for signs of privilege escalation or unauthorized system access. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today