CVE-2019-25343Public exploit

Local privilege escalation via writable service binaries

Published Feb 12, 2026 · Updated Feb 12, 2026

Insecure file permissions in Vm3Max NextVPN 4.10 allow local users to gain SYSTEM or Administrator privileges by replacing executables. The installer grants the current user Full Control over executables in the NextVPN directory, including Helper64.exe, allowing a service binary to be overwritten. A low-privileged Windows account that can write the installation directory can plant a malicious executable and wait for the privileged service to launch it.

CVSS severity8.5
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure file permissions in Vm3Max NextVPN 4.10 allow local users to gain SYSTEM or Administrator privileges by replacing executables. The installer grants the current user Full Control over executables in the NextVPN directory, including Helper64.exe, allowing a service binary to be overwritten. A low-privileged Windows account that can write the installation directory can plant a malicious executable and wait for the privileged service to launch it.

The record

CVE
CVE-2019-25343
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
Vm3Max
Product
NextVPN
Classifications
CWE-732, CAPEC-642, T1574.010
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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=4.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Vm3Max · NextVPNversion=4.10

Published CVSS scores

7.8VulnCheckCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CAPEC-642Replace Binaries
T1574.010Hijack Execution Flow: Services File Permissions Weakness

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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