CVE-2026-5474

NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow

HIGH
8.8
CVSS Score
Published: April 3, 2026 at 05:00 PM UTC
Updated: July 24, 2026 at 08:20 PM UTC
2 products affected across 1 vendorCfsCore Flight System

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

A vulnerability was found in NASA cFS up to 7.0.0. This affects the function CFE_MSG_GetSize of the file apps/to_lab/fsw/src/to_lab_passthru_encode.c of the component CCSDS Packet Header Handler. Performing a manipulation results in heap-based buffer overflow. The attacker must have access to the local network to execute the attack. 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/355078
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/355078/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/781950
Issue Tracking
Source: cverecord
https://github.com/nasa/cFS/issues/952
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

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-122CWE-119

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