CVE-2026-16871: CWE-787 Out-of-bounds Write
CVE-2026-16871 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves a heap buffer overflow that could allow a remote authenticated attacker to obtain sensitive information. The vulnerability does not impact integrity or availability, and no known exploits are reported in the wild. No official patch or remediation guidance has been provided yet.
AI Analysis
Technical Summary
IBM i versions 7.3 through 7.6 contain a heap buffer overflow vulnerability (CWE-787) that could be exploited by a remote authenticated attacker to leak sensitive information. The CVSS 3.1 base score is 4.3, reflecting low complexity and the need for authentication but no user interaction. The vulnerability affects confidentiality but not integrity or availability. As of the published date, no patch or official remediation level has been disclosed by IBM.
Potential Impact
An attacker with valid credentials could exploit this heap buffer overflow to access sensitive information on affected IBM i systems. There is no indication of impact on data integrity or system availability. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates. No specific mitigations have been provided by the vendor at this time.
CVE-2026-16871: CWE-787 Out-of-bounds Write
Description
CVE-2026-16871 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves a heap buffer overflow that could allow a remote authenticated attacker to obtain sensitive information. The vulnerability does not impact integrity or availability, and no known exploits are reported in the wild. No official patch or remediation guidance has been provided yet.
CVSS v3.1
Score 4.3medium
Affected software
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM i versions 7.3 through 7.6 contain a heap buffer overflow vulnerability (CWE-787) that could be exploited by a remote authenticated attacker to leak sensitive information. The CVSS 3.1 base score is 4.3, reflecting low complexity and the need for authentication but no user interaction. The vulnerability affects confidentiality but not integrity or availability. As of the published date, no patch or official remediation level has been disclosed by IBM.
Potential Impact
An attacker with valid credentials could exploit this heap buffer overflow to access sensitive information on affected IBM i systems. There is no indication of impact on data integrity or system availability. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates. No specific mitigations have been provided by the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T04:26:21.195Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7e2501bf8831d539bec080
Added to database: 08/13/2026, 20:11:45 UTC
Last enriched: 08/13/2026, 20:28:14 UTC
Last updated: 08/14/2026, 00:43:04 UTC
Views: 3
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