An incorrect authorization vulnerability exists in acmailer, which may allow a user to create a sub-account that has administrative privileges.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Extra Innovation Inc. acmailer CGI unaffected
Version Status Constraints
0 affected < 4.1.2
Extra Innovation Inc. acmailer DB unaffected
Version Status Constraints
0 affected < 1.2.2

No data.

No data.

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No data.

Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://jvn.jp/en/jp/JVN47716829/ cve-icon cve-icon
https://www.acmailer.jp/info/de.cgi?id=119 cve-icon cve-icon
History

Wed, 19 Aug 2026 05:15:00 +0000

Type Values Removed Values Added
Description An incorrect authorization vulnerability exists in acmailer, which may allow a user to create a sub-account that has administrative privileges.
Weaknesses CWE-863
References
Metrics cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-08-19T04:54:02.396Z

Reserved: 2026-08-10T06:57:23.652Z

Link: CVE-2026-70408

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-19T05:17:05.820

Modified: 2026-08-19T05:17:05.820

Link: CVE-2026-70408

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-19T06:30:05Z

Weaknesses