CVE-2026-61358: Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-61358

Improper link resolution before file access ('link following') in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoft product: Windows Accessibility Infrastructure Privilege escalation

What: Improper symlink resolution in ATBroker.exe allows an authorized attacker to elevate privileges locally.
Who is affected: Authorized users of Windows systems with Accessibility Infrastructure enabled.
Urgency: High; privilege escalation with CVSS 7.8, though not currently exploited in the wild.
Action: Apply the latest Windows security update addressing CVE-2026-61358.

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: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61358

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-2026-613583.7% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 89% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-61358	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows Accessibility Infrastructure

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.

highCVE-2026-61358: Improper link resolution before file access ('link following') in Windows Accessibility Infras…nvd · 2026-08-11
highCVE-2026-56647: Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an autho…nvd · 2026-07-14
highCVE-2026-56647: Windows Remote Access Service Infrastructure Elevation of Privilege Vulnerabilitymsrc · 2026-07-14