CVE-2023-26601Network attack vector

Authenticated service crash via oversized image dimensions

Published Mar 6, 2023 · Updated Mar 6, 2025

Denial of service in four ManageEngine products allows remote authenticated users to crash the application through a crafted image upload. The ImageUploadServlet API trusts attacker-controlled image dimensions and allocates memory from an oversized header without pixel-size or type limits, exhausting memory despite a small file. Authentication and access to image upload are required; exploitation crashes or leaves the service unresponsive, blocking application access.

CVSS severity7.5
High
EPSS probability34.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in four ManageEngine products allows remote authenticated users to crash the application through a crafted image upload. The ImageUploadServlet API trusts attacker-controlled image dimensions and allocates memory from an oversized header without pixel-size or type limits, exhausting memory despite a small file. Authentication and access to image upload are required; exploitation crashes or leaves the service unresponsive, blocking application access.

The record

CVE
CVE-2023-26601
Published
Mar 6, 2023
Updated
Mar 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5Trend Micro Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/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
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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