CVE-2026-7770
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Remote Code Execution in IBM i Access Client Solutions

Publication date: 2026-06-01

Last updated on: 2026-06-01

Assigner: IBM Corporation

Description
IBM i Access Family 1.1.5.0 through 1.1.9.12 IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator.
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Meta Information
Published
2026-06-01
Last Modified
2026-06-01
Generated
2026-06-22
AI Q&A
2026-06-01
EPSS Evaluated
2026-06-20
NVD
CVE-2026-7770
EUVD
EUVD-2026-33730
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
ibm i_access_client_solutions From 1.1.5.0 (inc) to 1.1.9.12 (inc)
ibm i_access_family From 1.1.5.0 (inc) to 1.1.9.12 (inc)
ibm i_access_client_solutions *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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Mitigation Strategies

The vulnerability can be resolved by upgrading IBM i Access Client Solutions (ACS) to version 1.1.9.13 or later.

Users can obtain the latest version through IBM's official download sites, Entitled Systems Support (ESS), or by applying specific PTFs for IBM i releases 7.6, 7.5, 7.4, or 7.3.

No workarounds or mitigations are currently available.

Impact Analysis

This vulnerability can allow an attacker to remotely execute arbitrary code on affected systems, potentially leading to full compromise of the system.

The CVSS base score of 8.8 indicates a high severity impact, including complete confidentiality, integrity, and availability loss.

Executive Summary

CVE-2026-7770 is a remote code execution vulnerability in IBM i Access Client Solutions (ACS) versions 1.1.5.0 through 1.1.9.12 when it is configured to listen for requests from IBM i Navigator.

The vulnerability is classified under CWE-74, which involves improper neutralization of special elements in output used by a downstream component, allowing an attacker to execute arbitrary code remotely.

Compliance Impact

The provided information does not specify how CVE-2026-7770 affects compliance with common standards and regulations such as GDPR or HIPAA.

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