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CVE-2026-5475— NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption

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及之前版本存在缓冲区错误漏洞，该漏洞源于CCSDS Header Size Handler组件CFE_SB_TransmitMsg函数存在缺陷，可能导致内存损坏。

CVSS 5.5 · Medium EPSS 0.33% · P25

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5475

Vulnerability Information
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Vulnerability Title
NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Core Flight System 缓冲区错误漏洞
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及之前版本存在缓冲区错误漏洞，该漏洞源于CCSDS Header Size Handler组件CFE_SB_TransmitMsg函数存在缺陷，可能导致内存损坏。
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-2026-5475

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III. Intelligence Information for CVE-2026-5475

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Vendor Advisories for CVE-2026-5475 (3)

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

CVE-2026-5474 6.3 MEDIUM NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow
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-119

V. Comments for CVE-2026-5475

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