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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-92157— F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion

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）是一个用于开发和部署航天飞行及其他嵌入式软件应用的框架。在 4.3.0 版本之前，Svc::FileDownlink 组件中的 SendPartial 范围验证存在漏洞，原因是未对 startOffset 与 length 的算术加法进行有效性检查，导致绕过了范围检查，并存储了一个与 m_byteOffset 不一致的包装后（wrapped）m_endOffset 值。当现有源文件的大小大于合法的 startOffset，且 SendPartial 命令所指定的 length 与该 offse

CVSS 6.5 · Medium EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
nasa fprime < 4.3.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-92157

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion
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 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because unchecked startOffset plus length arithmetic bypasses the range check and stores a wrapped m_endOffset that is inconsistent with m_byteOffset. When an existing source file is larger than a valid startOffset and a SendPartial command supplies a length whose U32 sum with that offset wraps below the file size, under standard F Prime assertion handling, the first data-packet transition reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa fprime < 4.3.0 -

II. Public POCs for CVE-2026-92157

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-92157

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-92157 (3)

Other References for CVE-2026-92157 (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-2026-92155 7.5 HIGH F´: FileUplink Unknown Packet Type 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-2026-92156 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-190

V. Comments for CVE-2026-92157

No comments yet

Leave a comment