CYBERSECURITYMarch 17, 20261 min read20 views

CISA Flags Actively Exploited Wing FTP Vulnerability Leaking Server Paths

The U.S. CISA has added a medium-severity Wing FTP vulnerability to its KEV catalog, warning that the flaw, which leaks server paths, is being actively exploited.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a medium-severity security flaw impacting Wing FTP to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.

The vulnerability, CVE-2025-47813 (CVSS score: 4.3), is an information disclosure vulnerability that leaks the installation path of the application under certain conditions.

"Wing FTP Server contains a generation of error messages containing sensitive information vulnerability when using a long value in the UID cookie," CISA said.

The shortcoming affects all versions of the software prior to and including version 7.4.3. The issue was addressed in version 7.4.4, shipped in May following a responsible disclosure by RCE Security researcher Julien Ahrens.

It's worth noting that version 7.4.4 also patches CVE-2025-47812 (CVSS score: 10.0), another critical bug in the same product that allows for remote code execution. As of July 2025, the vulnerability has come under active exploitation in the wild.

According to details shared by Huntress at the time, attackers have leveraged it to download and execute malicious Lua files, conduct reconnaissance, and install remote monitoring and management software.

Ahrens, in a proof-of-concept (PoC) exploit, shared on GitHub, noted that the endpoint at "/loginok.html" does not properly validate the value of the "UID" session cookie. As a result, if the supplied value is longer than the maximum path size of the underlying operating system, it triggers an error message that discloses the full local server path.

"Successful exploits can allow an authenticated attacker to get the local server path of the application, which can help in exploiting vulnerabilities like CVE-2025-47812," the researcher added.

There are currently no details on how the vulnerability is being exploited in the wild, and if it's being abused in conjunction with CVE-2025-47812. In light of the latest development, Federal Civilian Executive Branch (FCEB) agencies are recommended to apply the necessary fixes by March 30, 2026.

Source: The Hacker News

More in this category

cybersecurity

OpenSSL HollowByte Flaw Could Freeze Server Memory with 11-Byte TLS Requests

A mere 11-byte TLS request can force an unpatched OpenSSL server to allocate up to 131 KB of memory that is never released. OpenSSL silently patched this "HollowByte" vulnerability without issuing a CVE or security advisory.

cybersecurity

Seven Malicious Vite npm Packages Use Blockchain C2 to Deliver a RAT

Cybersecurity researchers have discovered a cluster of seven malicious npm packages targeting the Vite frontend tooling ecosystem as part of a software supply chain attack.

cybersecurity

GoldenEyeDog Subgroup Linked to DigiCert Breach and Code-Signing Certificate Theft

Cybersecurity researchers have attributed the April 2026 DigiCert security incident to CylindricalCanine, a subgroup of the Chinese cybercrime group GoldenEyeDog, which compromised DigiCert's support portal to steal and abuse code-signing certificates.

cybersecurity

Armenia Detains Russian Tourist on U.S. Warrant for REvil Hacker, Lawyers Say Wrong Man

Armenia has detained a Russian tourist on a U.S. extradition warrant targeting a REvil ransomware suspect. However, defense lawyers argue it is a case of mistaken identity caused by incomplete name details in the U.S. warrant.

cybersecurity

ACR Stealer Uses ClickFix Lures to Steal Browser Tokens and Microsoft 365 Files

ACR Stealer, an active infostealer, is targeting enterprise networks using sophisticated 'ClickFix' social engineering lures. By tricking users into pasting malicious commands into the Run dialog, attackers can easily steal session tokens, browser credentials, and sensitive documents from OneDrive and SharePoint.

cybersecurity

CISA Adds Exploited SharePoint RCE Zero-Day CVE-2026-58644 to KEV

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a critical Microsoft SharePoint Server zero-day vulnerability (CVE-2026-58644) to its Known Exploited Vulnerabilities (KEV) catalog, warning of active exploitation in the wild.