---
id: CVE-2026-92155
title: >-
  F´ (F Prime) is a framework that enables development and deployment of
  spaceflight and other embedded software applications
summary: >-
  F´ (F Prime) is a framework that enables development and deployment of
  spaceflight and other embedded software applications. Prior to 4.2.0,
  Fw::FilePacket deserialization used by Svc::FileUplink is vulnerable because
  Header deserializat…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-617
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:19:34.777'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92155'
references:
  - url: >-
      https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/pull/4919'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/releases/tag/v4.2.0'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/security/advisories/GHSA-3534-8qg7-6cf5'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-14T18:47:39.321Z'
vendor: nasa
product: fprime
affected:
  - fprime < 4.2.0
---

## Overview

F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Fw::FilePacket deserialization used by Svc::FileUplink is vulnerable because Header deserialization casts the byte to the Type enum without validating its range and FilePacket::fromSerialBuffer reaches a default FW_ASSERT. When a network file packet contains an unknown file-packet type byte, the assertion aborts or resets the default Ref application process, causing denial of service. This issue is fixed in version 4.2.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.