Nsauditor
CVE-2021-47895
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to crash the application by overwriting the Event Description field with a large bu. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Nsauditor versions up to 3.2.2.0 is affected by allocation of resources without limits or throttling (CVSS 7.5).
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affects Nsauditor. Nsauditor 3.2.2.0 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Event Description field with a large buffer. Attackers can generate a 10,000-character 'U' buffer and paste it into the Event Description field to trigger an application crash.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
Nsauditor 3.2.2.0 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Event Description field with a large buffer. Attackers can generate a 10,000-character 'U' buffer and paste it into the Event Description field to trigger an application crash.
Executive ViewAI
Nsauditor versions up to 3.2.2.0 contain a denial-of-service vulnerability that allows attackers to exhaust system resources without limits, potentially disrupting critical network auditing operations. Organizations running affected versions face service unavailability and operational disruption, particularly if Nsauditor is integral to compliance or security monitoring workflows.
Implement network access controls to restrict Nsauditor connectivity to trusted administrative networks only; deploy rate-limiting and connection throttling at the network perimeter using firewall or WAF rules; monitor resource utilization (CPU, memory, connections) on Nsauditor systems and configure alerting for anomalies; consider disabling non-critical Nsauditor features or services until vendor patch becomes available; maintain isolated test environments separate from production systems to limit blast radius.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
Stack-based buffer overflow in Nsauditor Network Auditing Tool 3.0.28 and 3.2.1.0 in the DNS Lookup tool allows attacker
NetShareWatcher 1.5.8.0 contains a structured exception handler buffer overflow vulnerability that allows local attacker
Nsauditor 3.0.28.0 contains a structured exception handling buffer overflow vulnerability that allows local attackers to
SpotFTP Password Recover 2.4.2 contains a denial of service vulnerability that allows local attackers to crash the appli
BlueAuditor 1.7.2.0 contains a buffer overflow vulnerability in the registration key field that allows local attackers t
SpotAuditor 3.6.7 contains a local buffer overflow vulnerability in the Base64 Password Decoder component that allows at
Backup Key Recovery 2.2.4 contains a denial of service vulnerability that allows local attackers to crash the applicatio
NSauditor 3.1.2.0 contains a buffer overflow vulnerability in the SNMP Auditor Community field that allows local attacke
DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field tha
SpotPaltalk 1.1.5 contains a denial of service vulnerability in the registration code input field that allows local atta
Nsauditor 3.2.0.0 contains a denial of service vulnerability in the registration name input field that allows attackers
Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to
GitHub PoC