---
id: CVE-2026-5476
title: A vulnerability was identified in NASA cFS up to 7.0.0 on 32-bit
summary: >-
  A vulnerability was identified in NASA cFS up to 7.0.0 on 32-bit. Affected is
  the function CFE_TBL_ValidateCodecLoadSize of the file
  cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation leads to
  integer overflow. The comple…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-189
  - CWE-190
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-2026-5476'
references:
  - url: 'https://github.com/nasa/cFS/'
    label: cna@vuldb.com
  - url: 'https://github.com/nasa/cFS/issues/954'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/781971'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355080'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355080/cti'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00209
epssPercentile: 0.11382
ingestedAt: '2026-07-24T09:23:51.102Z'
---

## Overview

A vulnerability was identified in NASA cFS up to 7.0.0 on 32-bit. Affected is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation leads to integer overflow. The complexity of an attack is rather high. The exploitability is told to be difficult. A fix is planned for the upcoming version milestone of the project.

## Affected

- `core_flight_system <= 7.0.0`

## Remediation

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