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CVE-2026-57088: Extensible Storage Engine (ESENT) Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-57088
Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Extensible Storage Engine (ESENT)Privilege escalation
What
Improper access control allows an authorized attacker to elevate privileges locally.
Who is affected
Authorized users of ESENT.
Urgency
Remediation is urgent due to high severity and potential for privilege escalation.
Action
Apply the latest security update to fix the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57088

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-57088coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Extensible Storage Engine

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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