CVE-2023-40044

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.904 · 100 %ileexploit · weaponizedDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · weaponized

Likely / severe?

90.4% (100th) EPSS

CVSS 8.8 · high

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2023-10-05remediate by 2023-10-26

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

EPSS · scored 2026-10-27

Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.8–10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.110criticalAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · security@progress.comexploitability 3.9 · impact 6

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (1)

Public proof-of-concept and weaponised exploit code.

exploit/windows/http/ws_ftp_rce_cve_2023_40044Progress Software WS_FTP Unauthenticated Remote Code Executionweaponized · metasploit

affected products (6)

Products and version ranges known to be affected.

Progress Software Corporation WS_FTP Server8.7.0 → 8.7.4enisa_euvdEU
Progress Software Corporation WS_FTP Server8.8.0 → 8.8.2enisa_euvdEU
Ipswitch Inc. WS_FTP Server≤ 8.7.4fstec_bduRU
Ipswitch Inc. WS_FTP Server8.8 → 8.8.2fstec_bduRU
progress ws ftp server< 8.7.4nvdUScpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*
progress ws ftp server8.8 → 8.8.2nvdUScpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2506Progress Software WS_FTP: Mehre SchwachstellenDeutsch2023-09-27csaf · cert_bundDE
Ein entfernter anonymer Angreifer kann mehrere Schwachstellen in Progress Software WS_FTP ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, Dateien zu manipulieren oder Cross-Site Scripting und Cross-Site Request Forgery Angriffe durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd cert_bund NVD CVE.org MITRE

published 2023-09-27modified 2026-06-17

related (3,744)

Related entries.

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+3739 more

references (26)

External citations — patches, advisories, analysis.

scry

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