Code execution via unvalidated BMP write destination
Published Jan 4, 2024 · Updated Jun 3, 2025
Write-what-where in BMP parsing in Siemens syngo fastView all versions allows context-dependent attackers to execute code via a crafted file. The BMP parser fails to validate user-supplied data before using it as a write destination, enabling attacker-controlled data to be written to an attacker-chosen location. Exploitation requires a user to open the malicious file or visit a malicious page, and execution remains within the current process context.
Summary
What happened
Write-what-where in BMP parsing in Siemens syngo fastView all versions allows context-dependent attackers to execute code via a crafted file. The BMP parser fails to validate user-supplied data before using it as a write destination, enabling attacker-controlled data to be written to an attacker-chosen location. Exploitation requires a user to open the malicious file or visit a malicious page, and execution remains within the current process context.
The record
- CVE
- CVE-2021-45465
- Published
- Jan 4, 2024
- Updated
- Jun 3, 2025
- Vendor
- Siemens
- Product
- syngo fastView
- Classifications
- CWE-123, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 4, 2024CVE publishedPublication date reported by the CVE source.
- Jun 3, 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?
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- Affected versionversion=All versions
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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