Microsoft Office Use-After-Free Remote Code Execution Vulnerability
CVE-2026-32190 is a Critical remote code execution vulnerability in Microsoft Office caused by a use-after-free condition. Microsoft classifies the weakness as CWE-416. According to the provided content, successful exploitation allows an unauthorized attacker to execute code locally. Although Microsoft titles this as a remote code execution issue, the supporting context states that the attack is carried out locally and that the 'Remote' designation refers to the attacker’s location rather than a network attack vector. The vulnerability is associated with document-borne exploitation scenarios, and Microsoft confirmed that the Preview Pane is an attack vector for this issue.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Microsoft PowerPoint remote code execution vulnerability affecting Office and Microsoft 365, notable because the Preview Pane is an attack vector.
A critical use-after-free remote code execution vulnerability in Microsoft Office, likely exploitable through malicious documents.
A critical use-after-free vulnerability in Microsoft Office that can result in local code execution.
A critical use-after-free remote code execution vulnerability in Microsoft Office that allows an unauthorized attacker to execute code locally, including via the Preview Pane attack vector.
The version that knows your environment.
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.