EUVD-2026-44019
GHSA-23r9-h96j-wj63
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local authenticated access required (AV:L/PR:L); uninitialized read yields memory disclosure only, with no write or availability impact (C:H/I:N/A:N).
Primary rating from Vendor (microsoft).
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionNVD
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
AnalysisAI
Information disclosure via uninitialized memory in the Windows SMB driver stack affects a broad range of Windows 10, Windows 11, and Windows Server versions. A locally authenticated, low-privileged attacker can trigger a code path that reads from uninitialized memory within the SMB subsystem, potentially leaking sensitive kernel or heap memory contents. …
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 | Exploitation requires the attacker to have an existing authenticated local session on the target Windows system, consistent with the CVSS vector PR:L (low-privilege authenticated) and AV:L (local attack vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.5 (Medium) reflects a local, low-privilege attack yielding high confidentiality impact but no integrity or availability impact, which is an accurate characterization. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a low-privileged local account on a Windows system - gained through phishing, credential theft, or initial compromise - issues a crafted request to the SMB driver via a local API or device control call, triggering the uninitialized memory read path. The leaked memory contents, which may include kernel pointers or sensitive data from other processes, are returned to the attacker's process. … |
| Remediation | Apply the vendor-released patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54997. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 Version 1607
View allLocal privilege escalation in Microsoft Active Directory Federation Services (AD FS) lets an already-authenticated low-p
Local privilege escalation in the Microsoft Windows Kernel allows an unauthorized attacker to gain elevated (SYSTEM-leve
Local privilege escalation in the Windows Win32K kernel subsystem (CWE-122 heap-based buffer overflow) lets an already-a
Local code execution in the Windows DHCP Client service stems from a use-after-free (CWE-416) memory-corruption flaw aff
Local code execution in the Microsoft Message Queuing (MSMQ) Queue Manager affects a broad range of Windows client and s
Remote code execution in the Microsoft Windows DHCP Server role allows an unauthenticated network attacker to run arbitr
Elevation of privilege in the Windows NTFS file-system driver lets an already-authenticated local user escalate to SYSTE
Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 throug
Elevation of privilege in the Windows Hyper-V virtual network switch (VMSwitch) lets an authenticated attacker operating
Remote code execution in the Windows Server Network driver stems from a race condition (CWE-362) that lets an unauthoriz
Remote code execution in Microsoft Windows Remote Desktop (RDP) allows an unauthorized network attacker to run arbitrary
Remote code execution in Microsoft Windows Message Queuing (MSMQ) allows an unauthenticated attacker to run arbitrary co
Same weakness CWE-908 – Use of Uninitialized Resource
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today