CVE-2024-22318Public exploit

Credential hash disclosure via hostile UNC configuration paths

Published Feb 9, 2024 · Updated Sep 20, 2024

NTLM hash disclosure in IBM i Access Client Solutions 1.1.2 through 1.1.4 and 1.1.4.3 through 1.1.9.4 allows attackers to capture credentials. ACS accepts UNC paths in 5250 terminal .HOD and legacy .WS configuration fields and passes them to Windows, which initiates authentication to the named server. The user must open a crafted configuration file on a Windows workstation with NTLM enabled, exposing the current session's hash but not altering data or service availability.

CVSS severity5.1
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NTLM hash disclosure in IBM i Access Client Solutions 1.1.2 through 1.1.4 and 1.1.4.3 through 1.1.9.4 allows attackers to capture credentials. ACS accepts UNC paths in 5250 terminal .HOD and legacy .WS configuration fields and passes them to Windows, which initiates authentication to the named server. The user must open a crafted configuration file on a Windows workstation with NTLM enabled, exposing the current session's hash but not altering data or service availability.

The record

CVE
CVE-2024-22318
Published
Feb 9, 2024
Updated
Sep 20, 2024
Vendor
IBM
Product
IBM i Access Client Solutions
Classifications
CWE-327, T1187
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 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=1.1.2 <=1.1.4
  2. Affected versionversion=1.1.4.3 <=1.1.9.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM i Access Client Solutionsversion=1.1.2 <=1.1.4; version=1.1.4.3 <=1.1.9.4

Published CVSS scores

5.1IBM CorporationCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm
T1187Forced Authentication

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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