CVE-2020-37188
Published: 11 February 2026
Summary
CVE-2020-37188 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Nsauditor (inferred from references). Its CVSS base score is 4.6 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 2.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2020-37188 affects SpotOutlook version 1.2.6 and involves a denial-of-service vulnerability due to a buffer overflow (CWE-120) in the registration name input field. Attackers can trigger the issue by pasting 1000 'A' characters into the 'Name' field, causing the application to crash and become unresponsive. The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), highlighting its high availability impact.
Any unauthenticated attacker can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. Exploitation leads to a denial of service, rendering the SpotOutlook application unavailable without compromising confidentiality or integrity.
Advisories such as the VulnCheck report and a proof-of-concept exploit documented on Exploit-DB (ID 47906) describe the vulnerability and reproduction steps, while the NSAuditor page provides additional context. No patches or specific mitigations are mentioned in the available references.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-31135
Vulnerability details
SpotOutlook 1.2.6 contains a denial of service vulnerability in the registration name input field that allows attackers to crash the application. Attackers can overwrite the buffer by pasting 1000 'A' characters into the 'Name' field, causing the application to become…
more
unresponsive.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in input field directly enables remote application crash, mapping to exploitation-based endpoint DoS.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation of all input fields (including the registration Name) to reject or truncate excessively long strings before a buffer overflow occurs.
Enforces memory-protection mechanisms (ASLR, DEP, stack canaries) that block successful exploitation of the buffer-overflow condition even if input validation fails.
Requires controls that limit or absorb the effects of DoS attacks, including application-level input-size throttling that would have prevented the crash from 1000-character input.