How severe is CVE-2020-37155?

CVE-2020-37155 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-37155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2020-37155?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2020-37155 have an EU (EUVD) identifier?

Yes. CVE-2020-37155 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31108.

When was CVE-2020-37155 published?

CVE-2020-37155 was published on 2026-02-07 and last updated on 2026-06-17.

CVE-2020-37155

CVE-2020-37155 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.7
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-31108
Weakness: CWE-120
Published: 2026-02-07
Last modified: 2026-06-17

Description

Core FTP Lite 1.3 contains a buffer overflow vulnerability in the username input field that allows attackers to crash the application by supplying oversized input. Attackers can generate a 7000-byte payload of repeated 'A' characters to trigger an application crash without requiring additional interaction.

Frequently asked questions

What is CVE-2020-37155?: Core FTP Lite 1.3 contains a buffer overflow vulnerability in the username input field that allows attackers to crash the application by supplying oversized input. Attackers can generate a 7000-byte payload of repeated 'A' characters to trigger an application crash without requiring additional interaction.
How severe is CVE-2020-37155?: CVE-2020-37155 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-37155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2020-37155?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2020-37155 have an EU (EUVD) identifier?: Yes. CVE-2020-37155 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31108.
When was CVE-2020-37155 published?: CVE-2020-37155 was published on 2026-02-07 and last updated on 2026-06-17.

References

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