EUVD-2026-83824
GHSA-9qw7-9w2r-xc4v
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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 low-privileged IOCTL to a kernel driver (AV:L/PR:L/AC:L) yielding arbitrary kernel write → full SYSTEM compromise (C/I/A:H); scope kept Unchanged as a standard LPE.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
6DescriptionCVE.org
A vulnerability was detected in BioStar VALKYRIE AURORA 2.10.2411.0800. This vulnerability affects the function sub_1105C of the file BS_RVSIO64.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress results in write-what-where condition. The attack needs to be approached locally. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Articles & Coverage 1
AnalysisAI
Local privilege escalation in BioStar VALKYRIE AURORA 2.10.2411.0800 allows an authenticated low-privileged local attacker to abuse the BS_RVSIO64.sys IOCTL handler and manipulate a PhysicalAddress value, triggering a write-what-where condition in the kernel driver. Successful exploitation can corrupt kernel memory and elevate privileges to SYSTEM or administrator level on an affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the BioStar VALKYRIE AURORA software (with its BS_RVSIO64.sys kernel driver installed and loaded) to be present on the target, plus an already-authenticated low-privileged local session (PR:L, AV:L) able to open the driver's device object and issue IOCTLs - there is no network vector and no user interaction. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine local privilege-escalation primitive, not an inflated high-CVSS finding. … 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 | No vendor-released patch identified at time of analysis; the vendor was contacted early but did not respond. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all instances of BioStar VALKYRIE AURORA 2.10.2411.0800, restrict access to trusted users, and monitor for attempts to load the BS_RVSIO64.sys driver or unusual kernel memory manipulation. …
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External POC / Exploit Code
Leaving vuln.today