SB2026110551 - Multiple vulnerabilities in IBM Cloud Pak System
Published: November 5, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Improper authentication (CVE-ID: CVE-2026-59309)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in the VMware Directory Service. A remote attacker can bypass authentication process and gain unauthorized access to the application.
2) Path traversal (CVE-ID: CVE-2026-59310) Exploited
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the Syslog server. A remote non-authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise the entire system.
3) Out-of-bounds write (CVE-ID: CVE-2026-47876)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 5 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H]
The vulnerability allows a malicious privileged guest to compromise the vulnerable system.
The vulnerability exists due to a boundary error in the VMXNET3 virtual network adapter. A privileged user on a guest OS can trigger an out-of-bounds write and execute arbitrary code on the host OS.
Note, non VMXNET3 virtual adapters are not affected by this vulnerability.
4) Out-of-bounds read (CVE-ID: CVE-2026-41703)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to a boundary condition. A remote user with VM deployment privileges can trigger an out-of-bounds read error and gain access to sensitive information or perform a denial of service attack.
5) Insufficient logging (CVE-ID: CVE-2026-41709) Exploited
CWE-ID: CWE-778 - Insufficient Logging
CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to bypass implemented security policies.
The vulnerability exists due to insufficient logging. A malicious administrator can perform certain operations without them being logged.
Remediation
Install update from vendor's website.