CVE-2026-16815
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
IBM i versions 7.6, 7.5, 7.4, and 7.3 contain a stack-based buffer overflow vulnerability that could allow a remote attacker to cause a denial of service and potentially obtain sensitive information.
Risk Assessment
An attacker could crash the system or leak data, potentially leading to operational disruptions and confidentiality breaches.
Recommendation
Apply IBM security patches and restrict external access to the system.
Other vulnerabilities in IBM i
See all- CVE-2026-96119Critical
IBM i versions 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to obtain sensitive information or execute arbitrary code on the system due to improper data sanitization by the HTTP Server Administration web application.
- CVE-2026-17083Critical
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.
- CVE-2026-17276Critical
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to escalate privileges due to improper authorization in the handling of high-authority threads.
- CVE-2026-17218Critical
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
- CVE-2026-16860Critical
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary code due to an uncontrolled search path element.
- CVE-2026-93886High
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary script code due to improper validation of user-supplied input.
- CVE-2026-81858Medium
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server. This vulnerability may lead to data disclosure or disruption of file services.
- CVE-2026-18343Medium
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to modify the BOOTP table due to improper authorization.
- CVE-2026-18318Medium
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote attacker to perform brute-force attacks to obtain credentials due to improper authentication.
- CVE-2026-17487Medium
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote attacker to enumerate user profiles due to the return of distinct error codes during the sign-on process.
Original NVD description (English source)
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service and potentially obtain sensitive information due to a stack-based buffer overflow.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

