Local privilege escalation via use-after-free
Published Jun 9, 2026 · Updated Jun 9, 2026
Use-after-free in Microsoft Office Click-To-Run allows local users with existing access to elevate privileges on affected Windows clients. Microsoft has not disclosed which Click-To-Run object is released or how attacker-controlled activity accesses it afterward. Exploitation requires low local privileges and high-complexity conditions; successful attacks obtain higher privileges on the same host.
Summary
What happened
Use-after-free in Microsoft Office Click-To-Run allows local users with existing access to elevate privileges on affected Windows clients. Microsoft has not disclosed which Click-To-Run object is released or how attacker-controlled activity accesses it afterward. Exploitation requires low local privileges and high-complexity conditions; successful attacks obtain higher privileges on the same host.
The record
- CVE
- CVE-2026-47293
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=19.0.0 <https://aka.ms/OfficeSecurityReleases
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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