CVE-2018-25213Public exploit

Local code execution via DNS Query SEH overwrite

Published Mar 26, 2026 · Updated Mar 26, 2026

Structured exception handling buffer overflow in Nsasoft Nsauditor Network Security Auditor 3.0.28.0 allows local users to execute arbitrary code. An oversized value in the DNS Query field overwrites the next SEH and SEH records after 5,235 bytes, redirecting execution to injected shellcode. Exploitation requires local interaction with the desktop application and runs code with the application's privileges.

CVSS severity8.6
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Structured exception handling buffer overflow in Nsasoft Nsauditor Network Security Auditor 3.0.28.0 allows local users to execute arbitrary code. An oversized value in the DNS Query field overwrites the next SEH and SEH records after 5,235 bytes, redirecting execution to injected shellcode. Exploitation requires local interaction with the desktop application and runs code with the application's privileges.

The record

CVE
CVE-2018-25213
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
Nsasoft
Product
Nsauditor Network Security Auditor
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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=3.0.28.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Nsasoft · Nsauditor Network Security Auditorversion=3.0.28.0

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
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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
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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