XSS in Wftpserver Wing FTP Server
CVE-2020-27735
An XSS issue was discovered in Wing FTP 6.4.4. An arbitrary IFRAME element can be included in the help pages via a crafted link, leading to the execution of (sandboxed) arbitrary HTML and JavaScript in the user's browser.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.058 (92.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.058 · newest: 0.058 · change: 0.000
Affected products
- Wftpserver Wing FTP Server — versions 6.4.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wftpserver.com/serverhistory.htm (Release Notes, Vendor Advisory)
- wshenk.blogspot.com/2021/01/xss-in-wing-ftps-web-interface-cve-2020.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27735?
- CVE-2020-27735 is a medium-severity vulnerability in Wftpserver Wing FTP Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-26.
- How severe is CVE-2020-27735?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-27735 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.