CVE-2019-25232Public exploit

Arbitrary code execution via DNS/IP field overflow

Published Jan 30, 2026 · Updated Jan 30, 2026

Buffer overflow in NetPCLinker 1.0.0.0 allows local users to execute shellcode through the Clients Control Panel DNS/IP field. The add-client handler copies an oversized DNS/IP value without a bounds check, overwriting the structured exception handler and redirecting execution through an egghunter payload. Exploitation requires the Windows application to process the crafted value when a client is added, after which code runs with the application's privileges.

CVSS severity9.8
Critical
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in NetPCLinker 1.0.0.0 allows local users to execute shellcode through the Clients Control Panel DNS/IP field. The add-client handler copies an oversized DNS/IP value without a bounds check, overwriting the structured exception handler and redirecting execution through an egghunter payload. Exploitation requires the Windows application to process the crafted value when a client is added, after which code runs with the application's privileges.

The record

CVE
CVE-2019-25232
Published
Jan 30, 2026
Updated
Jan 30, 2026
Vendor
NetPCLinker
Product
NetPCLinker
Classifications
CWE-120, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 30, 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=1.0.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

NetPCLinker · NetPCLinkerversion=1.0.0.0

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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.

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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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

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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