Linked CVE review

Deploy Microsoft ESU security update KB5055515

Linked CVEs: 1
Confirmed exploited: 0
PoC or lab evidence: 0
Maximum CVSS: 8.6

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.

1 of 1 linked CVEs shown

Confirmed exploitedCVSS above 9.0

CVE and description	Severity	Exploit reality	Forecast and access	Remediation
CVE-2025-27737 Scheduled assessment Windows Security Zone Mapping Security Feature Bypass Vulnerability Improper input validation in Windows Security Zone Mapping allows an unauthorized attacker to bypass a security feature locally.	8.6 · CVSS 3.1 · HighSource: CNA	No 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: 0.76% · 53.9th percentileForecast date: 2026-10-08LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.