---
id: CVE-2026-5475
title: A vulnerability was determined in NASA cFS up to 7.0.0
summary: >-
  A vulnerability was determined in NASA cFS up to 7.0.0. This impacts the
  function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS
  Header Size Handler. Executing a manipulation can lead to memory corruption.
  The projec…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
vendor: nasa
product: core_flight_system
affected:
  - core_flight_system <= 7.0.0
published: '2026-04-03'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5475'
references:
  - url: 'https://github.com/nasa/cFS/'
    label: cna@vuldb.com
  - url: 'https://github.com/nasa/cFS/issues/953'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/781951'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355079'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355079/cti'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00218
epssPercentile: 0.12509
ingestedAt: '2026-07-24T09:23:51.000Z'
---

## Overview

A vulnerability was determined in NASA cFS up to 7.0.0. This impacts the function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS Header Size Handler. Executing a manipulation can lead to memory corruption. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `core_flight_system <= 7.0.0`

## Remediation

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