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TI-2020-19254 Aliases CVE-2020-37119GHSA-qpw6-3qr8-fmwg

Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite))

Priority HIGH 78CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Nsauditor 3.0.28 and 3.2.1.0 contains a buffer overflow vulnerability in the DNS Lookup tool that allows attackers to execute arbitrary code by overwriting memory. Attackers can craft a malicious DNS query payload to trigger a three-byte overwrite, bypass ASLR, and execute shellcode through a carefully constructed exploit.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00721 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NsasoftNsauditor3.2.1.0; 3.0.28—No fix listedCNA
  • Nsauditor VendorNsasoft Affected 3.2.1.0; 3.0.28 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:nsasoft:nsauditor:3.0.28:*:*:*:*:*:*:*3.0.28VulnerableNsasoft
cpe:2.3:a:nsasoft:nsauditor:3.2.1.0:*:*:*:*:*:*:*3.2.1.0VulnerableNsasoft
  • cpe:2.3:a:nsasoft:nsauditor:3.0.28:*:*:*:*:*:*:* Versions 3.0.28 Vulnerable ·Nsasoft
  • cpe:2.3:a:nsasoft:nsauditor:3.2.1.0:*:*:*:*:*:*:* Versions 3.2.1.0 Vulnerable ·Nsasoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-37119
  2. 2026-10-03 Alias added: GHSA-qpw6-3qr8-fmwg
  3. 2026-10-04 EPSS moved to the 50th–90th percentile

References

Exploit 1

Other 1

  • TI-2018-15438 Nsauditor 3.0.28.0 Local SEH Buffer Overflow CVSS 4.0HIGH 8.6
  • TI-2021-22509 Nsauditor 3.2.2.0 - 'Event Description' Denial of Service CVSS 4.0MEDIUM 6.7
  • TI-2021-22431 Nsauditor 3.2.3 - Denial of Service (PoC) CVSS 4.0MEDIUM 6.7
  • TI-2020-19265 Nsauditor 3.2.0.0 - 'Name' Denial of Service CVSS 4.0MEDIUM 6.7
  • TI-2019-15650 NSauditor 3.1.2.0 Denial of Service via Community Field CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences