CVE-2026-45586: Windows Collaborative Translation Framework (CTFMON) Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-45586

Improper link resolution before file access ('link following') in Windows Collaborative Translation Framework allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoft product: Windows Collaborative Translation Framework Privilege escalation

What: Improper link resolution before file access in Windows Collaborative Translation Framework allows an authorized attacker to elevate privileges locally.
Who is affected: Authorized users of Windows Collaborative Translation Framework.
Urgency: Remediation is urgent due to the high severity and potential for privilege escalation.
Action: Install the latest security patch for Windows.

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: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45586

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.

Moderate exploitation riskCVE-2026-455863.0% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 86% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-45586	coverage & exploitation status	NVD · CVE.org

CVE-2026-45586: Windows Collaborative Translation Framework (CTFMON) Elevation of Privilege Vulnerability

CSIRTS triage

Details

Exploitation outlook

Referenced CVEs

More from Microsoft Security Response Center