---
id: CVE-2026-92159
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::TlmPacketizer TlmRecv_handler fixed-slot copy TlmRecv_handler copies
  val.getSize bytes into…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-130
  - CWE-805
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:19:35.360'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92159'
references:
  - url: >-
      https://github.com/nasa/fprime/commit/048fe04062b91be7af138df7e09cdd15812dde96
    label: security-advisories@github.com
  - url: >-
      https://github.com/nasa/fprime/commit/7eacd551aaf6d9a21e347ac2c8d827ca15ee5755
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/pull/4878'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/releases/tag/v4.3.0a1'
    label: security-advisories@github.com
  - url: 'https://github.com/nasa/fprime/security/advisories/GHSA-grrq-8rmr-xf83'
    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::TlmPacketizer TlmRecv_handler fixed-slot copy TlmRecv_handler copies val.getSize bytes into entry.channelSize storage without confirming that the runtime value fits. When a telemetry update for a configured channel carries a serialized value larger than that channel fixed slot, the copy overwrites adjacent channel fields and causes corrupted packetized telemetry to be emitted. This issue is fixed in version 4.3.0.

## Remediation

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