Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-92155— F´: FileUplink Unknown Packet Type Assertion DoS

Quick assessment

Affected
nasa fprime
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.

F´（F Prime）是一个用于开发及部署航天飞行及其他嵌入式软件应用的框架。在 4.2.0 版本之前，Svc::FileUplink 所使用的 Fw::FilePacket 反序列化机制存在漏洞。具体而言，在反序列化 Header 时，系统会将字节直接强制转换为 Type 枚举类型，而未对该字段的取值范围进行校验；当 FilePacket::fromSerialBuffer 接收到无效的 Type 字节时，会触发默认断言（FW_ASSERT）。如果网络文件数据包中包含未知的文件类型字节，该断言会导致 Ref 应用

CVSS 7.5 · High EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
nasa fprime < 4.2.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-92155

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
F´: FileUplink Unknown Packet Type Assertion DoS
Source: CVE Program / CVE List V5
Vulnerability Description
F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Fw::FilePacket deserialization used by Svc::FileUplink is vulnerable because Header deserialization casts the byte to the Type enum without validating its range and FilePacket::fromSerialBuffer reaches a default FW_ASSERT. When a network file packet contains an unknown file-packet type byte, the assertion aborts or resets the default Ref application process, causing denial of service. This issue is fixed in version 4.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa fprime < 4.2.0 -

II. Public POCs for CVE-2026-92155

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-92155

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-92155 (2)

Other References for CVE-2026-92155 (2)

Same Patch Batch · nasa · 2026-10-14 · 11 CVEs total

CVE-2026-92152 9.3 CRITICAL F´: Unvalidated Port Index in GenericHub
CVE-2026-92154 8.1 HIGH F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packe
CVE-2026-92151 7.5 HIGH F´: SpacePacketDeframer Small Packet Assertion DoS
CVE-2026-92150 7.5 HIGH F´: GenericHub Malformed Buffer Assertion DoS
CVE-2026-92158 7.2 HIGH F´: FpySequencer Integer Overflow in Stack Offset/Size Validation Leading to Out-of-Bounds
CVE-2026-92153 7.1 HIGH F´: Arbitrary File Write in Svc::FileUplink via attacker-controlled StartPacket.destinatio
CVE-2026-92157 6.5 MEDIUM F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a
CVE-2026-92156 6.5 MEDIUM F´: EventManager asserts on legal oversized LogBuffer values delivered over the standard G
CVE-2026-92160 6.5 MEDIUM F´: SendPartial Integer Overflow Leading to Assertion DoS
CVE-2026-92159 6.5 MEDIUM F´: TlmPacketizer copies oversized telemetry past configured channel slots and emits corru

IV. Related Vulnerabilities

Same product: fprime
Same vendor: nasa
Same weakness: CWE-617

V. Comments for CVE-2026-92155

No comments yet

Leave a comment