---
id: CVE-2026-92160
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 4.3.0,
  Svc::FileDownlink SendPartial range validation is vulnerable because the
  wrapping sum bypasses f…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-190
  - CWE-617
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:19:35.507'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92160'
references:
  - url: >-
      https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914
    label: security-advisories@github.com
  - url: >-
      https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/pull/5565'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/releases/tag/v4.3.0'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/security/advisories/GHSA-8r3j-ghrh-55mw'
    label: security-advisories@github.com
tags:
  - nvd
ingestedAt: '2026-10-14T18:47:39.323Z'
---

## Overview

F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because the wrapping sum bypasses file-range validation, becomes m_endOffset, and leaves m_byteOffset greater than the wrapped end offset. When an existing source file is larger than the supplied startOffset and a caller able to issue SendPartial supplies a length whose U32 sum with that offset wraps, the first data-packet send reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.

## Remediation

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