July 2026 Patch TuesdayKB5101003Normal patch window

Microsoft · KB5101003

Linked CVE review

Deploy Microsoft Developer Tools security update KB5101003

Linked CVEs
1
Confirmed exploited
0
PoC or lab evidence
0
Maximum CVSS
8.1
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-2026-47304 Scheduled assessment
.NET Security Feature Bypass Vulnerability

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

8.1 · CVSS 3.1 · HighSource: 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: 0.29% · 19.3th percentileForecast date: 2026-10-06NETWORK · HIGH complexity · NONE privileges · NONE user interactionWithin 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Patch available. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258