CVE-2026-85454Public exploitHinoki check available

Code execution via serial telegram off-by-one write

Published Sep 3, 2026 · Updated Sep 3, 2026

Buffer overflow in Core MOOS 10.4.0 and earlier allows physically proximate attackers to corrupt memory via a full serial telegram. CMOOSSerialPort::GetTelegram reads to the 1,000-byte stack-buffer limit, then writes a NUL terminator at index 1,000, one byte beyond the array. Control of a serial line or attached feed is required; the overwrite corrupts process memory and enables code execution, while unterminated input interrupts serial handling until restart.

CVSS severity6.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Buffer overflow in Core MOOS 10.4.0 and earlier allows physically proximate attackers to corrupt memory via a full serial telegram. CMOOSSerialPort::GetTelegram reads to the 1,000-byte stack-buffer limit, then writes a NUL terminator at index 1,000, one byte beyond the array. Control of a serial line or attached feed is required; the overwrite corrupts process memory and enables code execution, while unterminated input interrupts serial handling until restart.

The record

CVE
CVE-2026-85454
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
themoos
Product
Core MOOS
Classifications
CWE-193
Attack vector
physical
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 <=10.4.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

themoos · Core MOOSversion=0 <=10.4.0

Published CVSS scores

6.1VulnCheck CNACVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
5.2VulnCheck CNACVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-193Off-by-one Error

Public exploit references

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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