CVE-2020-37197Public exploit

Application crash via oversized registration name

Published Feb 11, 2026 · Updated Feb 11, 2026

Buffer overflow in Nsasoft DNSS Domain Name Search Software allows local users to crash the application through the registration dialog. The registration Name field copies a 1,000-character value without enforcing the destination buffer size, terminating the process. Exploitation requires interactive access to paste the generated payload and click OK; the documented consequence is a local application crash only.

CVSS severity4.6
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Nsasoft DNSS Domain Name Search Software allows local users to crash the application through the registration dialog. The registration Name field copies a 1,000-character value without enforcing the destination buffer size, terminating the process. Exploitation requires interactive access to paste the generated payload and click OK; the documented consequence is a local application crash only.

The record

CVE
CVE-2020-37197
Published
Feb 11, 2026
Updated
Feb 11, 2026
Vendor
Nsasoft
Product
DNSS Domain Name Search Software
Classifications
CWE-120, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Nsasoft · DNSS Domain Name Search Softwareversion=-

Published CVSS scores

7.5VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.6VulnCheck CNACVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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