CVE-2026-85438Network attack vectorHinoki check available

Code execution via unvalidated IvP payload counts

Published Sep 3, 2026 · Updated Sep 3, 2026

Out-of-bounds write in StringToIvPFunction() in MOOS-IvP 24.8.1 and earlier allows remote attackers to execute code via crafted BHV_IPF payloads. The decoder uses unvalidated dimension, piece, and degree counts for allocations and loops, then writes attacker-controlled doubles past the IvPBox weight array after dimension narrowing. An unauthenticated MOOS publisher can reach a subscribing process; a 65-byte payload crashes stock uFunctionVis, while successful memory corruption permits process-level code execution.

CVSS severity9.8
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds write in StringToIvPFunction() in MOOS-IvP 24.8.1 and earlier allows remote attackers to execute code via crafted BHV_IPF payloads. The decoder uses unvalidated dimension, piece, and degree counts for allocations and loops, then writes attacker-controlled doubles past the IvPBox weight array after dimension narrowing. An unauthenticated MOOS publisher can reach a subscribing process; a 65-byte payload crashes stock uFunctionVis, while successful memory corruption permits process-level code execution.

The record

CVE
CVE-2026-85438
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
MOOS-IvP
Product
MOOS-IvP
Classifications
CWE-190, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=24.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MOOS-IvP · MOOS-IvPversion=0 <=24.8.1

Published CVSS scores

9.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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