CVE-2026-5474

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-355078 | NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow
https://vuldb.com/vuln/355078
Signature, Permissions Required signature permissions-required
VDB-355078 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/355078/cti
Third Party Advisory third-party-advisory
Submit #781950 | NASA cFS 7.0.0 Heap over-read via untrusted CCSDS length in TO_LAB sendto
https://vuldb.com/submit/781950
Issue Tracking issue-tracking
https://github.com/nasa/cFS/issues/952

Scores

CVSS v3 6.3
EPSS 0.0037
EPSS Percentile 29.0%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-122
Status published
Products (2)
NASA/cFS 7.0
nasa/core_flight_system < 7.0.0
Published Apr 03, 2026
Tracked Since Apr 03, 2026