CVE-2020-37119

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

CVSS 8.4 HIGHEPSS 0.6%CWE-121

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.4EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Nsasoft · Nsauditor

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References

https://www.exploit-db.com/exploits/48350 https://www.nsauditor.com/https://www.vulncheck.com/advisories/nsauditor-buffer-overflow-sehaslr-bypass-bytes-overwrite