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CVE-2026-35436 is an elevation-of-privilege vulnerability in Microsoft Office Click-to-Run caused by insufficient granularity of access control in shared Click-to-Run infrastructure. The flaw affects Click-to-Run-based Microsoft Office deployments and can be exploited by a low-privileged local attacker without user interaction. Successful exploitation allows an attacker operating within the Office Click-to-Run AppContainer to escape that sandbox and cross the component security boundary, resulting in SYSTEM-level privileges on the host. The issue is local-only and is not exploitable through the Preview Pane.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation and AppContainer sandbox escape vulnerability in Microsoft Office Click-to-Run shared infrastructure caused by insufficient access control.
A local elevation of privilege vulnerability in Microsoft Office Click-To-Run caused by insufficient granularity of access control, allowing an authorized attacker to gain elevated privileges, potentially SYSTEM.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.