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CVE-2026-92154— F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packet validation

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) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus

CVSS 8.1 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
nasa fprime < 4.2.0 affected
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I. Basic Information for CVE-2026-92154

Vulnerability Information

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Vulnerability Title
F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packet validation
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, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus dataSize with wrapping U32 arithmetic and then seeks to the large attacker-controlled offset before writing. When a file-uplink DATA packet supplies a byteOffset and dataSize whose unsigned sum wraps below the declared file size, data can be written beyond the declared upload size, causing file integrity loss and potentially large sparse-file growth or resource exhaustion. 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:L/UI:N/S:U/C:N/I:H/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 < 4.2.0 -

II. Public POCs for CVE-2026-92154

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III. Intelligence Information for CVE-2026-92154

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Patches & Fixes for CVE-2026-92154 (2)

Other References for CVE-2026-92154 (1)

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

CVE-2026-92152 9.3 CRITICAL F´: Unvalidated Port Index in GenericHub
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-2026-92157 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-190

V. Comments for CVE-2026-92154

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