CVE-2020-37119

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 v4.0

8.4 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.61% chance of exploitation in the next 30 days, 47th percentile

Published

2026-02-05

Updated

2026-07-15

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/48350

References

• CVE Record
• NVD entry

Related

• CVE-2020-37118
• CVE-2020-37120
• CVE-2020-37117
• CVE-2020-37121
• CVE-2020-37116
• CVE-2020-37122