CVE-2023-45185Public exploitNetwork attack vector

Authenticated code execution via untrusted deserialization

Published Dec 14, 2023 · Updated Aug 2, 2024

Deserialization in IBM Access Client Solutions 1.1.2 through 1.1.4 and 1.1.4.3 through 1.1.9.3 allows remote authenticated users to execute code. The LmHybridServerImpl listener deserializes network packets and user data without authenticating the serialized object's origin. Access to the listener and low-privilege credentials are sufficient to run operations with the authority of the active client account.

CVSS severity7.4
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in IBM Access Client Solutions 1.1.2 through 1.1.4 and 1.1.4.3 through 1.1.9.3 allows remote authenticated users to execute code. The LmHybridServerImpl listener deserializes network packets and user data without authenticating the serialized object's origin. Access to the listener and low-privilege credentials are sufficient to run operations with the authority of the active client account.

The record

CVE
CVE-2023-45185
Published
Dec 14, 2023
Updated
Aug 2, 2024
Vendor
IBM
Product
IBM i Access Client Solutions
Classifications
CWE-863, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <=1.1.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM i Access Client Solutionsversion=1.1.2 <=1.1.4; version=1.1.4.3 <=1.1.9.3

Published CVSS scores

7.4IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1203Exploitation for Client Execution

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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