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CVE-2026-5474— NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow

Quick assessment

Affected
NASA cFS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Core Flight System（cFS）是NASA开源的一种通用的飞行软件架构框架，用于旗舰航天器、载人航天器、立方体卫星和 Raspberry Pi。 Core Flight System 7.0.0及之前版本存在安全漏洞，该漏洞源于CCSDS Packet Header Handler组件CFE_MSG_GetSize函数存在缺陷，可能导致基于堆的缓冲区溢出。

CVSS 6.3 · Medium EPSS 0.61% · P47

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5474

Vulnerability Information
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Vulnerability Title
NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Core Flight System 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Core Flight System（cFS）是NASA开源的一种通用的飞行软件架构框架，用于旗舰航天器、载人航天器、立方体卫星和 Raspberry Pi。 Core Flight System 7.0.0及之前版本存在安全漏洞，该漏洞源于CCSDS Packet Header Handler组件CFE_MSG_GetSize函数存在缺陷，可能导致基于堆的缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NASA cFS 7.0 cpe:2.3:a:nasa:cfs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5474

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III. Intelligence Information for CVE-2026-5474

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Vendor Advisories for CVE-2026-5474 (3)

Same Patch Batch · NASA · 2026-04-03 · 4 CVEs total

CVE-2026-5475 5.5 MEDIUM NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption
CVE-2026-5476 4.6 MEDIUM NASA cFS cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow
CVE-2026-5473 4.5 MEDIUM NASA cFS Pickle pickle.load deserialization

IV. Related Vulnerabilities

Same product: cFS
Same vendor: NASA
Same weakness: CWE-122

V. Comments for CVE-2026-5474

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