Security readout for executives and security teams
Plain-English summary
YATinyWinFTP 0.0.5 can be crashed remotely by an unauthenticated network attacker using a malformed FTP command. The practical business risk is interruption of any FTP service using this software. Public exploit information exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Prioritize quickly if YATinyWinFTP is exposed to the Internet or supports business workflows. The main confirmed impact is service outage, but public exploit availability increases operational risk. If the software is not present, no action beyond documentation is needed.
Technical view
CVE-2020-36964 affects ik80 YATinyWinFTP 0.0.5. Sources describe a buffer overflow/CWE-787 condition triggered over the network, causing the FTP service to crash. The CVSS 3.1 score is 9.8, though the public description emphasizes denial of service rather than proven confidentiality or integrity impact.
Likely exposure
Exposure is limited to environments running YATinyWinFTP 0.0.5, especially if the FTP service is reachable from untrusted networks or the Internet. The product appears niche, so first priority is confirming whether it exists in the environment.
Exploitation context
A public ExploitDB entry is referenced, indicating exploit details are publicly available. The bundle does not identify CISA KEV inclusion or any confirmed in-the-wild exploitation. Attack requires network access to the FTP service and no authentication, according to the CVSS vector.
Researcher notes
Evidence is somewhat inconsistent: the CVSS vector rates confidentiality, integrity, and availability as high, while the described impact is denial of service from a crash. Validate actual impact before assuming data compromise. No patch is named in the provided sources.
Mitigation direction
- Inventory systems for YATinyWinFTP 0.0.5.
- Disable the FTP service if it is not business-critical.
- Restrict FTP access to trusted networks or VPN users only.
- Check the vendor repository and advisory sources for current remediation guidance.
- Consider replacing unsupported FTP software if no maintained fix is available.
Validation and detection
- Confirm whether YATinyWinFTP 0.0.5 is installed or running.
- Identify whether the FTP service is Internet-facing.
- Review firewall rules limiting access to the FTP port.
- Check service and system logs for unexpected FTP crashes.
- Verify any remediation against vendor or advisory guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-36964 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49127CVE reference · exploit
- YATinyWinFTP GitHub RepositoryCVE reference · product
- VulnCheck Advisory: YATinyWinFTP - Denial of ServiceCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.