CVE-2026-5476

NASA cFS cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow

MEDIUM
4.6
CVSS Score
Published: April 3, 2026 at 05:30 PM UTC
Updated: July 24, 2026 at 09:23 AM UTC
2 products affected across 1 vendorCfsCore Flight System

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Severity
MEDIUM4.6
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/355080
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/355080/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/781971
Issue Tracking
Source: cverecord
https://github.com/nasa/cFS/issues/954
Product
Source: cverecord
https://github.com/nasa/cFS/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.6MEDIUMVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190CWE-189

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