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Nsauditor EUVDEUVD-2018-21684

| CVE-2018-25213 HIGH
Out-of-bounds Write (CWE-787)
2026-03-26 VulnCheck GHSA-jph6-59p4-prm4
8.6
CVSS 4.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, write limits
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 8.6 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.01%.

Exploit ScenarioDerived

A local attacker with access to the system could write data beyond allocated buffer boundaries leading to code execution or crashes. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 26, 2026

Nsauditor 3.0.28.0 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying malicious input to the DNS Lookup tool. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Earlier versions of this analysis (1)
v1 Mar 26, 2026 - 13:45 CVSS 8.6

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).

Affected VersionsENISA

Nsauditor Local SEH Buffer Overflow 3.0.28.0

Affected Packages

euvd nsauditor_local_seh_buffer_overflow no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Nsauditor 3.0.28.0 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying malicious input to the DNS Lookup tool. Attackers can craft a payload with SEH chain overwrite and inject shellcode through the DNS Query field to achieve code execution with application privileges. Affected products include: Nsauditor Nsauditor Local Seh Buffer Overflow.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.6 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
PoC Detected
Mar 27, 2026 - 18:24 vuln.today
Public exploit code
CVE Published
Mar 26, 2026 - 13:24 nvd
HIGH 8.6

DescriptionCVE.org

Nsauditor 3.0.28.0 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying malicious input to the DNS Lookup tool. Attackers can craft a payload with SEH chain overwrite and inject shellcode through the DNS Query field to achieve code execution with application privileges.

Executive ViewAI

Why It Matters

Organizations using Nsauditor 3.0.28.0 face significant risk from CVE-2018-25213, a out-of-bounds write vulnerability rated CVSS 8.6. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Exploit
POC
Public exploit code exists
Data Quality
7 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment Exploit-DB VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
Poc
System Exposure· derived
Small
Automatable
No
Human Impact
Very High
Technical Impact
Total

Priority Score

63
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +43
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

CVE-2020-37119 CRITICAL POC
9.8 Feb 05

Stack-based buffer overflow in Nsauditor Network Auditing Tool 3.0.28 and 3.2.1.0 in the DNS Lookup tool allows attacker

CVE-2019-25733 HIGH POC
8.6 Jun 04

NetShareWatcher 1.5.8.0 contains a structured exception handler buffer overflow vulnerability that allows local attacker

CVE-2021-47895 HIGH POC
7.5 Jan 23

Nsauditor versions up to 3.2.2.0 is affected by allocation of resources without limits or throttling (CVSS 7.5).

CVE-2019-25711 MEDIUM POC
6.9 Apr 12

SpotFTP Password Recover 2.4.2 contains a denial of service vulnerability that allows local attackers to crash the appli

CVE-2019-25712 MEDIUM POC
6.9 Apr 12

BlueAuditor 1.7.2.0 contains a buffer overflow vulnerability in the registration key field that allows local attackers t

CVE-2019-25666 MEDIUM POC
6.9 Apr 05

SpotAuditor 3.6.7 contains a local buffer overflow vulnerability in the Base64 Password Decoder component that allows at

CVE-2019-25599 MEDIUM POC
6.9 Mar 22

Backup Key Recovery 2.2.4 contains a denial of service vulnerability that allows local attackers to crash the applicatio

CVE-2019-25597 MEDIUM POC
6.9 Mar 22

NSauditor 3.1.2.0 contains a buffer overflow vulnerability in the SNMP Auditor Community field that allows local attacke

CVE-2019-25591 MEDIUM POC
6.9 Mar 22

DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field tha

CVE-2019-25559 MEDIUM POC
6.8 Mar 21

SpotPaltalk 1.1.5 contains a denial of service vulnerability in the registration code input field that allows local atta

CVE-2020-37130 MEDIUM POC
6.7 Feb 05

Nsauditor 3.2.0.0 contains a denial of service vulnerability in the registration name input field that allows attackers

CVE-2021-47815 MEDIUM POC
6.7 Jan 16

Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to

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