CVE-2024-39917Public exploitNetwork attack vector

Unlimited password guessing via unenforced retry limit

Published Jul 12, 2024 · Updated Nov 3, 2025

Improper login-attempt restriction in neutrinolabs xrdp before 0.10.0 allows remote attackers to make unlimited password guesses. xrdp-sesman leaves an RDP session connected after failed credentials instead of enforcing MaxLoginRetry from /etc/xrdp/sesman.ini. No authentication is required; repeated guesses can expose accounts with guessable passwords, while the flaw itself does not grant access without a valid password.

CVSS severity7.2
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper login-attempt restriction in neutrinolabs xrdp before 0.10.0 allows remote attackers to make unlimited password guesses. xrdp-sesman leaves an RDP session connected after failed credentials instead of enforcing MaxLoginRetry from /etc/xrdp/sesman.ini. No authentication is required; repeated guesses can expose accounts with guessable passwords, while the flaw itself does not grant access without a valid password.

The record

CVE
CVE-2024-39917
Published
Jul 12, 2024
Updated
Nov 3, 2025
Vendor
neutrinolabs
Product
xrdp
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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 <=0.10.0
  2. Affected versionversion=<= 0.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

neutrinolabs · xrdpversion=0 <=0.10.0; version=<= 0.10.0

Published CVSS scores

7.2GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

Public exploit references

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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