Code execution via use-after-free memory access
Published Dec 10, 2024 · Updated Jun 9, 2026
Use-after-free in Microsoft Excel 2016 and affected Office suites allows local attackers to execute code after a user opens a crafted file. Microsoft identifies unsafe reuse of freed memory but has not disclosed the affected Excel parser, object lifetime error, or triggering file element. Exploitation requires user interaction; successful exploitation runs attacker-controlled code in the current user's security context.
Summary
What happened
Use-after-free in Microsoft Excel 2016 and affected Office suites allows local attackers to execute code after a user opens a crafted file. Microsoft identifies unsafe reuse of freed memory but has not disclosed the affected Excel parser, object lifetime error, or triggering file element. Exploitation requires user interaction; successful exploitation runs attacker-controlled code in the current user's security context.
The record
- CVE
- CVE-2024-49069
- Published
- Dec 10, 2024
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-416, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 10, 2024CVE 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=1.0.0 <16.92.24120731
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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