What’s Vulnerable › Vulnerabilities

CVE-2020-37119: Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite))

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-05 · updated 2026-06-17
• Weakness: CWE-121

Description

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.

Affected products

• Nsauditor: 3.0.28, 3.2.1.0

References

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

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