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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Summary

CVECVE-2026-7770
StatePUBLISHED
Assigneribm
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-01 19:16:54 UTC
Updated2026-06-01 19:16:54 UTC
DescriptionIBM 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-74 | CWE-74 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA IBM I Access Family affected 1.1.5.0 1.1.9.12 semver Not specified

References

ReferenceSourceLinkTags
www.ibm.com/support/pages/node/7274214 [email protected] www.ibm.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: The issue can be fixed by upgrading to version 1.1.9.13 or later.   See https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09731 7.5SJ09729 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09729 7.4SJ09730 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09730 7.3SJ09732 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ09732

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