CVE-2022-44608Network attack vector

Authenticated service interruption via storage exhaustion

Published Dec 7, 2022 · Updated Apr 23, 2025

Uncontrolled resource consumption in Cybozu Remote Service 4.0.0 through 4.0.3 allows remote authenticated users to exhaust server storage. Cybozu identifies license management as the affected function but does not disclose the request or operation that causes unbounded storage consumption. Management-interface access is required, and exploitation can exhaust the target server's storage and interrupt service.

CVSS severity4.3
Medium
EPSS probability0.85%
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 4.0.0 through 4.0.3 allows remote authenticated users to exhaust server storage. Cybozu identifies license management as the affected function but does not disclose the request or operation that causes unbounded storage consumption. Management-interface access is required, and exploitation can exhaust the target server's storage and interrupt service.

The record

CVE
CVE-2022-44608
Published
Dec 7, 2022
Updated
Apr 23, 2025
Vendor
Cybozu
Product
Cybozu Remote Service
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=4.0.0 to 4.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cybozu · Cybozu Remote Serviceversion=4.0.0 to 4.0.3

Published CVSS scores

4.3JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0JPCERT/CCAV:N/AC:L/Au:S/C:N/I:N/A:P

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
T1499.004Application or System Exploitation

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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