Integer overflow in Nasa Fprime
CVE-2026-92154
F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus dataSize with wrapping U32 arithmetic and then seeks to the large attacker-controlled offset before writing. When a file-uplink DATA packet supplies a byteOffset and dataSize whose unsigned sum wraps below the declared file size, data can be written beyond the declared upload size, causing file integrity loss and potentially large sparse-file growth or resource exhaustion. This issue is fixed in version 4.2.0.
Vulnerability class: Integer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Nasa Fprime — versions < 4.2.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-92154?
- CVE-2026-92154 is a high-severity vulnerability in Nasa Fprime, classified under Integer Overflow or Wraparound. CVSS score: 8.1/10. Published 2026-10-14.
- How severe is CVE-2026-92154?
- High severity. CVSS v3 base score is 8.1 out of 10.