CVE-2023-46278Network attack vector

Authenticated storage exhaustion and communication disruption

Published Oct 31, 2023 · Updated Sep 5, 2024

Uncontrolled resource consumption in Cybozu Remote Service 4.1.0 through 4.1.1 allows remote authenticated users to interrupt service. Cybozu identifies the MDM option's administration interface but withholds the triggering requests and underlying resource-handling error. Exploitation can consume substantial storage or significantly delay communications, with no reported confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Cybozu Remote Service 4.1.0 through 4.1.1 allows remote authenticated users to interrupt service. Cybozu identifies the MDM option's administration interface but withholds the triggering requests and underlying resource-handling error. Exploitation can consume substantial storage or significantly delay communications, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2023-46278
Published
Oct 31, 2023
Updated
Sep 5, 2024
Vendor
Cybozu
Product
Cybozu Remote Service
Classifications
CWE-400, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record 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=4.1.0 to 4.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cybozu · Cybozu Remote Serviceversion=4.1.0 to 4.1.1

Published CVSS scores

5.0CybozuCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

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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