CVE-2020-27735

Wing Ftp Server vulnerability

CVSS

6.1

EPSS

5.6%

EPSS pct

92th

Exploited

No known

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.

Affected vendor

Wftpserver

Affected product

Wing Ftp Server

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2021-01-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 5.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2020-27735

Confirm whether Wftpserver Wing Ftp Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-27735.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-27735

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-27735 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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