Threats / Wing FTP Server / CVE-2025-47813
CVE-2025-47813
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Wing FTP Server vulnerability
Wing FTP Server generates error messages containing sensitive information when processing long UID cookie values, enabling information disclosure to unauthenticated attackers.
Verdict
Today item — known-exploited.
An unauthenticated attacker can craft requests with oversized UID cookies to trigger verbose error responses that leak sensitive system or application details, facilitating reconnaissance for further attacks.
CISA KEV Yes · 2026-03-165EPSS 0.58727 (verify live)6CVSS 4.33CISA SSVC Exploitation: active · Automatable: no · Impact: total4Exploit Public PoC / detection · nuclei template10
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
1 independent public report of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-03-16).
Probability (EPSS)
EPSS 0.58727 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) · Affected: Wing FTP Server, Wing FTP Server. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-209 Error Message Info Leak — weakness family: Authorization / access control.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 249 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I send a request with an excessively long UID cookie value to the FTP server.
Business
The organization's internal system details and configuration information become exposed through error messages.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I analyze the leaked error messages to identify system architecture, software versions, or other sensitive metadata.
Business
Attackers gain intelligence to plan targeted exploitation of known vulnerabilities in identified components.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05