High severity · published Jun 1, 2026
CVE-2026-7770
IBM i Access Client Solutions (ACS) is vulnerable to remote code execution when configured to listen for requests from IBM i Navigator
8.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IA
i Access Family · IBM
1.1.5.0 through 1.1.9.12 · source: vendor
IA
I Access Client Solutions · Ibm
1.1.5.0 before 1.1.9.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7770
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7770
Vendor Advisory
https://www.ibm.com/support/pages/node/7274214
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