CVE-2026-76137

Privilege escalation via unauthenticated local named pipe

Published Aug 21, 2026 · Updated Aug 21, 2026

Missing authentication in Yamaha Corporation VOCALOID6 Editor 6.13.1 and earlier allows local users to escalate privileges. The editor exposes a local named pipe for a critical function without authenticating connecting processes; the pipe and function are undisclosed. Exploitation requires a process under the same local user account while an affected editor instance is running.

CVSS severity4.8
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Yamaha Corporation VOCALOID6 Editor 6.13.1 and earlier allows local users to escalate privileges. The editor exposes a local named pipe for a critical function without authenticating connecting processes; the pipe and function are undisclosed. Exploitation requires a process under the same local user account while an affected editor instance is running.

The record

CVE
CVE-2026-76137
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Yamaha Corporation
Product
VOCALOID6
Classifications
CWE-306, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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 <=6.13.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Yamaha Corporation · VOCALOID6version=0 <=6.13.1

Published CVSS scores

3.3JPCERT/CCCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.8JPCERT/CCCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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