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    CVE-2023-40044

    In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

    Published:Sep 27, 2023
    Last Modified:Oct 31, 2025
    EPS:Sep 27, 2023
    EPSS Score:0.94436
    CVSS Score:10

    CISA Notification

    Description

    In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

    Required Action:

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

    Notes:

    No extra notes provided.

    Due Date
    Oct 26, 2023
    1051 days ago
    Alert Date
    Oct 5, 2023
    1072 days ago

    Affected Products

    Vendor
    Progress
    Product
    Ws Ftp Server

    Exploits

    http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlhttps://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlhttps://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044https://github.com/kenbuckler/WS_FTP-CVE-2023-40044

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

    CVE-2024-7745 (CVSS 6.5) — In WS_FTP Server versions before 8.8.8 (2022.0.8), a Missing Critical Step in Multi-Factor Authentication of t…
    CVE-2024-7744 (CVSS 6.5) — In WS_FTP Server versions before 8.8.8 (2022.0.8), an Improper Limitation of a Pathname to a Restricted Direct…
    CVE-2024-1474 (CVSS 7.5) — In WS_FTP Server versions before 8.8.5, reflected cross-site scripting issues have been identified on various …
    CVE-2023-42659 (CVSS 9.1) — In WS_FTP Server versions prior to 8.7.6 and 8.8.4, an unrestricted file upload flaw has been identified. An…
    CVE-2023-40049 (CVSS 5.3) — In WS_FTP Server version prior to 8.8.2, an unauthenticated user could enumerate files under the 'WebServ…
    CVE-2023-40048 (CVSS 6.8) — In WS_FTP Server version prior to 8.8.2, the WS_FTP Server Manager interface was missing cross-site reque…
    CVE-2023-40047 (CVSS 8.3) — In WS_FTP Server version prior to 8.8.2, a stored cross-site scripting (XSS) vulnerability exists in WS_FTP…
    CVE-2023-40046 (CVSS 8.2) — In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a SQL injection vulnerability exists in the WS_FTP Se…
    CVE-2023-40045 (CVSS 8.3) — In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability …
    CVE-2023-42657 (CVSS 9.9) — In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a directory traversal vulnerability was discovered.  An…

    References

    http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html
    https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044
    https://censys.com/cve-2023-40044/
    https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023
    https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044
    https://www.progress.com/ws_ftp
    https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/
    https://www.theregister.com/2023/10/02/ws_ftp_update/
    http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html
    https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044
    https://censys.com/cve-2023-40044/
    https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023
    https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044
    https://www.progress.com/ws_ftp
    https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/
    https://www.theregister.com/2023/10/02/ws_ftp_update/
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High