CVE-2018-25242Public exploit

Application crash via oversized search input

Published Apr 4, 2026 · Updated Apr 4, 2026

Denial of service in Microsoft One Search 1.1.0.0 allows local users to crash the application through an oversized search query. The search bar accepts a pasted string of at least 950 characters and passes it to processing that raises an unhandled exception. Access to the Windows desktop application is required, and exploitation terminates only the app until it is restarted.

CVSS severity6.9
Medium
EPSS probability0.17%
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 Microsoft One Search 1.1.0.0 allows local users to crash the application through an oversized search query. The search bar accepts a pasted string of at least 950 characters and passes it to processing that raises an unhandled exception. Access to the Windows desktop application is required, and exploitation terminates only the app until it is restarted.

The record

CVE
CVE-2018-25242
Published
Apr 4, 2026
Updated
Apr 4, 2026
Vendor
Microsoft
Product
One Search
Classifications
CWE-1389, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 2026Record 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=1.1.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · One Searchversion=1.1.0.0

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.2VulnCheckCVSS:3.1/AV:L/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1389Incorrect Parsing of Numbers with Different Radices
T1499Endpoint Denial of Service

Public exploit references

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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