Which versions of Spotftp are affected by CVE-2020-37209?

SpotFTP 3.0.0.0 contains a denial of service vulnerability that allows attackers to crash the application by submitting oversized input to the registration name field.

Is there a public PoC exploit available for CVE-2020-37209?

Yes, a public proof-of-concept exploit is available for CVE-2020-37209. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37209?

Within 24 hours: Inventory all systems running SpotFTP 3.0.0.0 and assess exposure; document which business processes depend on this service. Within 7 days: Implement input validation controls (WAF rules limiting name field to 255 characters maximum) and network segmentation to restrict SpotFTP access to trusted users only; monitor for suspicious registration attempts. Within 30 days: Contact vendor for patch timeline; evaluate alternative FTP solutions or upgrade to newer SpotFTP versions if available; establish formal incident response procedures for DoS scenarios.

Spotftp CVE-2020-37209

Q: What is the CVSS score of CVE-2020-37209?

CVE-2020-37209 has a CVSS 4.0 base score of 4.6 (Medium). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/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. EPSS exploitation probability: 0.0%.

MEDIUM

Classic Buffer Overflow (CWE-120)

2026-02-11 disclosure@vulncheck.com

Buffer Overflow Denial Of Service Spotftp Nsasoft

4.6

CVSS 4.0 · Vendor: vulncheck

Severity by source

Vendor (vulncheck) PRIMARY

4.6 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/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

Primary rating from Vendor (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Severity Changed

Jun 29, 2026 - 18:37 NVD

HIGH MEDIUM

CVSS changed

Jun 29, 2026 - 18:37 NVD

7.5 (HIGH) 4.6 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 20, 2026 - 20:20 vuln.today

Public exploit code

CVE Published

Feb 11, 2026 - 21:16 nvd

HIGH 7.5

DescriptionCVE.org

SpotFTP 3.0.0.0 contains a denial of service vulnerability in the registration name input field that allows attackers to crash the application. Attackers can generate a 1000-character buffer payload and paste it into the 'Name' field to trigger an application crash.

AnalysisAI

Technical ContextAI

Classified as CWE-120 (Classic Buffer Overflow). Affects Spotftp. SpotFTP 3.0.0.0 contains a denial of service vulnerability in the registration name input field that allows attackers to crash the application. Attackers can generate a 1000-character buffer payload and paste it into the 'Name' field to trigger an application crash.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.