What is CVE-2025-27889?
Wing FTP Server before 7.4.4 does not properly validate and sanitize the url parameter of the downloadpass.html endpoint, allowing injection of an arbitrary link. If a user clicks a crafted link, this discloses a cleartext password to the attacker.
The record classifies CVE-2025-27889 under weakness class CWE-15. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 452 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 3.4 — LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N - EPSS (FIRST)
- 0.0% probability of exploitation in the next 30 days, higher than 20.4% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 2.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2025-07-10, last modified 2025-07-17
Is CVE-2025-27889 being exploited?
It currently carries a trending score of 10 in the Threadlinqs vulnerability feed.
Affected products and versions
- Wftpserver: Wing Ftp Server
How to fix CVE-2025-27889
The record marks a vendor fix as available for CVE-2025-27889. No patch URL is recorded on this row, so the fixed version has to be read from the vendor advisory in the sources below.
Threat activity tracking CVE-2025-27889
No threat campaign in the Threadlinqs corpus currently references CVE-2025-27889, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.
Sources
Seeded from threadlinqs-intel and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.