CVE-2025-5342Network attack vector

Authenticated service interruption via resource-intensive search regex

Published Oct 30, 2025 · Updated Oct 30, 2025

Regular expression denial of service in ManageEngine Exchange Reporter Plus through 5721 allows remote authenticated users to interrupt service. The search module evaluates attacker-controlled search input with a resource-intensive regular expression, but Zoho has not disclosed the pattern or code locus. A low-privileged authenticated session is required; published evidence supports a bounded availability impact rather than data access or modification.

CVSS severity4.3
Medium
EPSS probability1.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular expression denial of service in ManageEngine Exchange Reporter Plus through 5721 allows remote authenticated users to interrupt service. The search module evaluates attacker-controlled search input with a resource-intensive regular expression, but Zoho has not disclosed the pattern or code locus. A low-privileged authenticated session is required; published evidence supports a bounded availability impact rather than data access or modification.

The record

CVE
CVE-2025-5342
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Zoho Corporation
Product
ManageEngine Exchange Reporter Plus
Classifications
CWE-1333, CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 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=0 <=5721

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoho Corporation · ManageEngine Exchange Reporter Plusversion=0 <=5721

Published CVSS scores

4.3ManageEngineCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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-1333Inefficient Regular Expression Complexity
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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