EUVD-2026-44279
GHSA-ffj6-89cj-pgr8
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local EoP needing an existing standard-user foothold gives AV:L/PR:L, no bounds or interaction hurdles gives AC:L/UI:N, and successful elevation yields full C/I/A high with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Buffer over-read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Microsoft's Windows Subsystem for Linux (WSL2) allows a low-privileged authenticated user on the Windows host to elevate to higher privileges by triggering a buffer over-read (CWE-126). Microsoft (the reporting vendor) has released a fix via MSRC, and there is no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already have local, authenticated access to the Windows host with at least low-level privileges (PR:L) and requires that WSL2 be installed and enabled on that host - a non-default component that must be explicitly added by the user or administrator. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H yields 7.8 (High): exploitation is local (AV:L), low complexity (AC:L), requires low privileges (PR:L), needs no user interaction (UI:N), does not cross a scope boundary (S:U), and grants full high impact across CIA. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has already gained low-privileged code execution on a Windows machine with WSL2 installed (for example via phishing or a compromised standard user account) invokes the vulnerable WSL interop/service path with crafted input that triggers the buffer over-read, corrupting or leaking privileged memory to elevate to higher privileges. No user interaction is required and attack complexity is low. … |
| Remediation | Patch available per vendor advisory: apply the Microsoft-released update referenced in the MSRC update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57968 (exact fixed version not enumerated in the provided data - obtain it from the MSRC page). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems with WSL2 enabled across the organization and prioritize critical servers and developer workstations. …
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Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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