July 2026 Patch TuesdayKB5089548Normal patch window

Microsoft · KB5089548

Linked CVE review

Deploy Microsoft Windows security update KB5089548

Linked CVEs
1
Confirmed exploited
0
PoC or lab evidence
0
Maximum CVSS
6.5
Evidence is kept separate

Confirmed exploitation, public exploit material, EPSS probability and CVSS severity answer different questions. “No confirmation recorded” means the checked sources do not currently confirm exploitation. It is not proof that exploitation has not occurred.

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1 of 1 linked CVEs shown
Confirmed exploitedCVSS above 9.0
CVE and descriptionSeverityExploit realityForecast and accessRemediation
CVE-2026-34348 Scheduled assessment
Windows Event Logging Service Information Disclosure Vulnerability

Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.

6.5 · CVSS 3.1 · MediumSource: CNANo confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.EPSS: 1.00% · 61.5th percentileForecast date: 2026-10-07NETWORK · LOW complexity · LOW privileges · NONE user interactionScheduledMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.Patch available. An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.