Device crash via unchecked filename copy
Published Aug 3, 2026 · Updated Aug 3, 2026
Stack-based buffer overflow in OreSat Firmware 1.0 allows physically proximate attackers to crash the device via an oversized filename. Within cmd_edl's edl fw_flash branch, memcpy writes strlen(filename)+1 bytes at offset four of a 64-byte stack buffer without checking the 60-byte remaining capacity. Physical access to the UART3 shell is required, and oversized input corrupts adjacent stack state, causing a crash that requires a hardware reset.
Summary
What happened
Stack-based buffer overflow in OreSat Firmware 1.0 allows physically proximate attackers to crash the device via an oversized filename. Within cmd_edl's edl fw_flash branch, memcpy writes strlen(filename)+1 bytes at offset four of a 64-byte stack buffer without checking the 60-byte remaining capacity. Physical access to the UART3 shell is required, and oversized input corrupts adjacent stack state, causing a crash that requires a hardware reset.
The record
- CVE
- CVE-2026-67673
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121, CWE-120, T0814
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 3, 2026CVE publishedPublication date reported by the CVE source.
- Aug 3, 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
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- Oversized fw_flash filename proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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