CVE-2026-81858
MediumCVSS 5.4Summary
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.
Risk Assessment
The risk includes potential disclosure of sensitive information and disruption of file services, which could impact system availability. An authenticated attacker could exploit this to escalate privileges or steal data.
Recommendation
Apply IBM-provided patches and restrict access to the file server to trusted users only. Also monitor logs for unusual activities.
Other vulnerabilities in IBM i
See all- 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-2026-18343Medium
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.
- CVE-2026-17484Medium
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to cause a denial of service due to improper access control.
- 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.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS