Process crash via wrapped SendPartial range check
Published Aug 3, 2026 · Updated Aug 3, 2026
Integer overflow in F Prime 4.2.2 allows remote attackers to crash the flight-software process through the SendPartial command. SendPartial adds attacker-controlled U32 offset and length values without overflow protection, allowing the wrapped result to bypass range validation and reach an assertion. Unauthenticated reachability requires a deployment that exposes the command through an attacker-reachable path; successful exploitation aborts the process and interrupts file downlink operations.
Summary
What happened
Integer overflow in F Prime 4.2.2 allows remote attackers to crash the flight-software process through the SendPartial command. SendPartial adds attacker-controlled U32 offset and length values without overflow protection, allowing the wrapped result to bypass range validation and reach an assertion. Unauthenticated reachability requires a deployment that exposes the command through an attacker-reachable path; successful exploitation aborts the process and interrupts file downlink operations.
The record
- CVE
- CVE-2026-67977
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1499
- Attack vector
- Unavailable
- Privileges
- Unavailable
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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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- SendPartial integer-overflow reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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