Code execution via out-of-bounds read
Published Nov 12, 2024 · Updated Jul 8, 2025
Out-of-bounds read in Microsoft Excel allows remote attackers to execute arbitrary code when a user opens a crafted workbook. Microsoft identifies the weakness but has not disclosed the affected parser, memory operation, or malformed workbook element. Exploitation requires an unauthenticated attacker to persuade a user to open the file, and resulting code runs in the user's context.
Summary
What happened
Out-of-bounds read in Microsoft Excel allows remote attackers to execute arbitrary code when a user opens a crafted workbook. Microsoft identifies the weakness but has not disclosed the affected parser, memory operation, or malformed workbook element. Exploitation requires an unauthenticated attacker to persuade a user to open the file, and resulting code runs in the user's context.
The record
- CVE
- CVE-2024-49028
- Published
- Nov 12, 2024
- Updated
- Jul 8, 2025
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-125, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 12, 2024CVE publishedPublication date reported by the CVE source.
- Jul 8, 2025Record 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=1.0.0 <16.91.24111020
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.
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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