CVE-2024-9999Network attack vector

MFA bypass via skipped second-factor verification

Published Nov 12, 2024 · Updated Nov 12, 2024

Authentication bypass in Progress WS_FTP Server before 8.8.9 allows remote authenticated users to log in without a second factor. The Web Transfer Module accepts a valid username and password without completing the configured second-factor verification step. A user already holding high-privilege credentials can access the account despite its multi-factor requirement, exposing account data and permitted actions without interrupting service.

CVSS severity6.5
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Progress WS_FTP Server before 8.8.9 allows remote authenticated users to log in without a second factor. The Web Transfer Module accepts a valid username and password without completing the configured second-factor verification step. A user already holding high-privilege credentials can access the account despite its multi-factor requirement, exposing account data and permitted actions without interrupting service.

The record

CVE
CVE-2024-9999
Published
Nov 12, 2024
Updated
Nov 12, 2024
Vendor
Progress Software Corporation
Product
WS_FTP Server
Classifications
CWE-303, CAPEC-114, CAPEC-115, CAPEC-554, T1078
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.8.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Progress Software Corporation · WS_FTP Serverversion=0 <8.8.9

Published CVSS scores

6.5Progress Software CorporationCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm
CAPEC-114Authentication Abuse
CAPEC-115Authentication Bypass
CAPEC-554Functionality Bypass
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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