CVE-2020-21588
CVE-2020-21588 is a medium-severity vulnerability in Coreftp Core Ftp with a CVSS 3.x base score of 5.5. 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: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 2.1
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Coreftp Core Ftp
- Published:
- Last modified:
Description
Buffer overflow in Core FTP LE v2.2 allows local attackers to cause a denial or service (crash) via a long string in the Setup->Users->Username editbox.
Frequently asked questions
- What is CVE-2020-21588?
- Buffer overflow in Core FTP LE v2.2 allows local attackers to cause a denial or service (crash) via a long string in the Setup->Users->Username editbox.
- How severe is CVE-2020-21588?
- CVE-2020-21588 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-21588 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-21588?
- CVE-2020-21588 affects Coreftp Core Ftp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-21588?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-21588 published?
- CVE-2020-21588 was published on 2021-04-02 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:coreftp:core_ftp:2.2:*:*:*:le:*:*:*
More vulnerabilities in Coreftp Core Ftp
- CVE-2020-19596 — Critical (CVSS 9.8): Buffer overflow vulnerability in Core FTP Server v1.2 Build 583, via a crafted username.
- CVE-2018-12113 — Critical (CVSS 9.8): Core FTP LE version 2.2 Build 1921 is prone to a buffer overflow vulnerability that may result in a DoS or remote code…
- CVE-2013-3930 — Critical (CVSS 9.3): Stack-based buffer overflow in Core FTP before 2.2 build 1785 allows remote FTP servers to execute arbitrary code via a…
- CVE-2009-3484 — Critical (CVSS 9.3): Stack-based buffer overflow in Core FTP 2.1 build 1612 allows user-assisted remote attackers to execute arbitrary code…
- CVE-2014-1215 — High (CVSS 7.8): Multiple buffer overflows in Core FTP Server before 1.2 build 508 allow local users to gain privileges via vectors…
- CVE-2019-25686 — High (CVSS 7.5): Core FTP 2.0 build 653 contains a denial of service vulnerability in the PBSZ command that allows unauthenticated…
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