CVE-2019-25637Public exploit

Local code execution via 264-byte field overflow

Published Mar 24, 2026 · Updated Mar 24, 2026

Buffer overflow in Fresh Software X-NetStat Professional 5.63 allows local users to execute arbitrary code through crafted field input. HTTP Client URL, Rules Run Program, or bulk IP-list fields accept oversized content that overruns a 264-byte stack buffer and overwrites EIP. Exploitation requires local access to the Windows GUI and runs injected shellcode with the application's privileges.

CVSS severity8.6
High
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

Buffer overflow in Fresh Software X-NetStat Professional 5.63 allows local users to execute arbitrary code through crafted field input. HTTP Client URL, Rules Run Program, or bulk IP-list fields accept oversized content that overruns a 264-byte stack buffer and overwrites EIP. Exploitation requires local access to the Windows GUI and runs injected shellcode with the application's privileges.

The record

CVE
CVE-2019-25637
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
Fresh Software
Product
X-NetStat Professional
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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=5.63 #

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Fresh Software · X-NetStat Professionalversion=5.63 #

Published CVSS scores

8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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