Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

10 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

94.45 %

Predictive Probability

Percentile Rank

100.0 th

Documented as more likely to be exploited than 100.0% of known CVEs.

Detection Date

Oct 05, 2023

Remediation Due

Oct 26, 2023

CISA Catalog Active

Threat Analysis

Progress WS_FTP Server contains a deserialization of untrusted data vulnerability in the Ad Hoc Transfer module that allows an authenticated attacker to execute remote commands on the underlying operating system.

Remediation Directive

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Asset Context

Vendor Identity

Progress

Affected Product

WS_FTP Server

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-502

External Intelligence

https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-40044