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CVE-2026-92156— F´: EventManager asserts on legal oversized LogBuffer values delivered over the standard GenericHub event bridge

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）是一个支持开发及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::EventManager 中的 logQueue_internalInterfaceHandler 数据包封装过程存在漏洞。该漏洞的成因在于：EventManager 接受的日志数据最大长度为框架中 LogBuffer 的定义上限，但数据包描述符、事件标识符和时间戳元数据会占用部分较大的 ComBuffer 空间，从而使得留给日志参数（log arguments）的剩余缓冲空间变小；当发生序列化失败时，

CVSS 6.5 · Medium EPSS 0.54% · P44

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
nasa fprime < 4.3.0 affected
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I. Basic Information for CVE-2026-92156

Vulnerability Information
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Vulnerability Title
F´: EventManager asserts on legal oversized LogBuffer values delivered over the standard GenericHub event bridge
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::EventManager loqQueue_internalInterfaceHandler packetization is vulnerable because EventManager accepts up to the framework LogBuffer maximum, but packet descriptor, event identifier, and time-tag metadata consume part of the larger ComBuffer and leave a smaller remaining budget for log arguments; serialization failure then reaches an assertion. When a deployment bridges events through GenericHub into EventManager and forwards a legal Fw::LogBuffer larger than EventManager remaining log-argument budget, under standard F Prime assertion handling, a legal bridged event payload 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
缓冲区大小计算不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa fprime < 4.3.0 -

II. Public POCs for CVE-2026-92156

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III. Intelligence Information for CVE-2026-92156

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Patches & Fixes for CVE-2026-92156 (2)

Other References for CVE-2026-92156 (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-2026-92157 6.5 MEDIUM F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a
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-131

V. Comments for CVE-2026-92156

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