CVE-2026-5475

NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption

MEDIUM
5.5
CVSS Score
Published: April 3, 2026 at 05:15 PM UTC
Updated: July 24, 2026 at 09:23 AM UTC
2 products affected across 1 vendorCfsCore Flight System

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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

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/355079
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/355079/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/781951
Issue Tracking
Source: cverecord
https://github.com/nasa/cFS/issues/953
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

5.5MEDIUMVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-119

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