Information disclosure via out-of-bounds read
Published Aug 11, 2026 · Updated Aug 25, 2026
Out-of-bounds read in Microsoft Office Word allows local users to disclose information via crafted document content. Microsoft has disclosed only that Word reads past intended memory bounds; the affected parser or file-handling routine has not been publicly identified. Exploitation requires local access and user interaction per Microsoft's CVSS 3.1 scoring, and the published impact is limited to confidentiality loss rather than data modification or service interruption.
Summary
What happened
Out-of-bounds read in Microsoft Office Word allows local users to disclose information via crafted document content. Microsoft has disclosed only that Word reads past intended memory bounds; the affected parser or file-handling routine has not been publicly identified. Exploitation requires local access and user interaction per Microsoft's CVSS 3.1 scoring, and the published impact is limited to confidentiality loss rather than data modification or service interruption.
The record
- CVE
- CVE-2026-63531
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
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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