CVE-2018-25266Public exploit

Application crash via oversized preferences value

Published Apr 22, 2026 · Updated Apr 22, 2026

Out-of-bounds write in Angry IP Scanner 3.5.3 allows local users to crash the application through the display preferences dialog. The unavailable-value field accepts a 44,455,293-character string without a length limit and writes beyond its intended buffer when the preferences are saved. Exploitation requires local interaction with the GUI and interrupts only the scanner process; no confidentiality or integrity impact is reported.

CVSS severity6.9
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Angry IP Scanner 3.5.3 allows local users to crash the application through the display preferences dialog. The unavailable-value field accepts a 44,455,293-character string without a length limit and writes beyond its intended buffer when the preferences are saved. Exploitation requires local interaction with the GUI and interrupts only the scanner process; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2018-25266
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
Angry IP Scanner
Product
Angry IP Scanner
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=3.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Angry IP Scanner · Angry IP Scannerversion=3.11

Published CVSS scores

6.2VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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