SB2026080424 - Multiple vulnerabilities in IBM Tivoli Netcool/OMNIbus WebGUI
Published: August 4, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2026-59879)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in List#set, List#setIn, List#updateIn, List#setSize, and the related functional set, setIn, and updateIn operations when processing a crafted index, size, or key-path segment in the range [2 ** 30, 2 ** 31). A remote attacker can send a specially crafted request to cause a denial of service.
A single small unauthenticated request can trigger an uncatchable infinite loop on an empty List or unbounded allocation leading to process abort on a populated List.
2) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-59880)
CWE-ID: CWE-407 - Inefficient Algorithmic Complexity
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to inefficient algorithmic complexity in Immutable.Map and Immutable.Set collision bucket handling when processing attacker-controlled object keys. A remote attacker can supply many crafted colliding keys to cause a denial of service.
Applications are affected when untrusted input is used as keys in Immutable structures rather than only as values under fixed keys.
Remediation
Install update from vendor's website.