CVE-2026-18102: CWE-122 Heap-based Buffer Overflow
Description
CVE-2026-18102 is a heap-based buffer overflow vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It arises from an integer underflow during bounds checking, allowing a remote authenticated attacker to overwrite adjacent memory. The vulnerability has a low severity with a CVSS score of 3.5 and requires low privileges and high attack complexity. No known exploits are reported in the wild, and no official patch information is provided.
CVSS v3.1
Score 3.5low
Affected software
IBM
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM i versions 7.3 through 7.6 contain a heap-based buffer overflow vulnerability (CWE-122) caused by an integer underflow during bounds checking. This flaw could allow a remote attacker with authentication and low privileges to overwrite adjacent memory, potentially impacting integrity but not confidentiality or availability. The CVSS 3.1 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and scope change with no confidentiality or availability impact but integrity impact.
Potential Impact
The vulnerability allows a remote authenticated attacker to overwrite adjacent memory, which could lead to integrity violations. There is no impact on confidentiality or availability according to the CVSS vector. No known exploitation in the wild has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-28T17:33:47.769Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a861420acd9273b4997c7cd
Added to database: 08/19/2026, 20:37:52 UTC
Last enriched: 09/11/2026, 07:33:17 UTC
Last updated: 10/04/2026, 10:02:26 UTC
Views: 47
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