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Microsoft Windows EUVDEUVD-2026-44273

| CVE-2026-57088 HIGH
Improper Access Control (CWE-284)
2026-07-14 microsoft GHSA-gqp7-j73x-j9wc
7.8
CVSS 3.1 · NVD
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Severity by source

Vendor (microsoft) PRIMARY
HIGH
qualitative
NVD
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local privilege escalation by an authenticated low-privileged user (AV:L, PR:L) with no user interaction and full SYSTEM-level compromise of C/I/A, matching the reported vector.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 18:59 vuln.today
CVE Published
Jul 14, 2026 - 17:09 nvd
HIGH 7.8

DescriptionNVD

Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.

AnalysisAI

Local privilege elevation in the Windows Extensible Storage Engine (ESENT) database library allows an already-authenticated low-privileged user on affected Windows 10 1809, Windows Server 2019, 2022, and 2025 systems to gain higher privileges, with full loss of confidentiality, integrity, and availability. The flaw stems from improper access control (CWE-284) in a core OS component that services many system databases. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privileged local access
Delivery
Run crafted tool invoking ESENT
Exploit
Abuse improper access control boundary
Execution
Elevate to SYSTEM privileges
Impact
Install persistence and dump credentials

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to already be an authenticated local user on the affected host (CVSS PR:L), execute code locally against the ESENT engine (AV:L), and needs no user interaction (UI:N) and no elevated privileges to start. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) describes a locally-exploitable flaw requiring low privileges and no user interaction, delivering high impact across all three security properties - a classic privilege-escalation profile useful as the second stage of an intrusion after initial foothold. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has already obtained a low-privileged foothold on a Windows Server 2022 host - for example a standard user account or a compromised service account - runs a crafted program that abuses ESENT's improper access control to elevate to SYSTEM. From there the attacker installs persistence, dumps credentials, and moves laterally. …
Remediation Patch available per vendor advisory: apply the Microsoft security update for your specific Windows SKU as documented at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57088 - the exact fixed build/KB number is listed per product in that MSRC guide (not enumerated in the supplied data, so consult the advisory for your OS version). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct an inventory of all systems running Windows Server 2019, Windows Server 2022, Windows Server 2025, or Windows 10 version 1809. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-44273 vulnerability details – vuln.today

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