Which versions of Nsauditor are affected by CVE-2021-47815?

Organizations using Nsauditor 3.2.3 face notable risk from CVE-2021-47815, a buffer overflow vulnerability rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2021-47815?

Yes, a public proof-of-concept exploit is available for CVE-2021-47815. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2021-47815?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Nsauditor CVE-2021-47815

Q: What is the CVSS score of CVE-2021-47815?

CVE-2021-47815 has a CVSS 4.0 base score of 6.7 (Medium). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

MEDIUM

Classic Buffer Overflow (CWE-120)

2026-01-16 disclosure@vulncheck.com

Denial Of Service Buffer Overflow Nsauditor

6.7

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.7 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Severity Changed

May 01, 2026 - 21:07 NVD

HIGH MEDIUM

CVSS changed

May 01, 2026 - 21:07 NVD

7.5 (HIGH) 6.7 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 21, 2026 - 21:54 vuln.today

Public exploit code

CVE Published

Jan 16, 2026 - 00:16 nvd

HIGH 7.5

DescriptionCVE.org

Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to crash the application. Attackers can paste a large buffer of 256 repeated characters into the 'Key' field to trigger an application crash.

AnalysisAI

Technical ContextAI

Classified as CWE-120 (Classic Buffer Overflow). Affects Nsauditor. Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to crash the application. Attackers can paste a large buffer of 256 repeated characters into the 'Key' field to trigger an application crash.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.