[NEW] [high] IBM i: Multiple Vulnerabilities
An attacker can exploit multiple vulnerabilities in IBM i to cause a denial of service, bypass security measures, and manipulate database transactions or memory.
CSIRTS triage
- What
- Multiple vulnerabilities in IBM i allow attackers to cause denial of service, bypass security measures, and manipulate database transactions or memory.
- Who is affected
- All IBM i deployments are affected.
- Urgency
- High severity; while not currently exploited, these vulnerabilities enable critical attack vectors including authentication bypass and memory manipulation.
- Action
- Apply IBM security patches for CVE-2026-17255, CVE-2026-18175, CVE-2026-18221, and CVE-2026-18341 immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3172
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-17255 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-18175 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-18221 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-18341 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for IBM i
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] IBM AIX and VIOS: Multiple vulnerabilitiescert-bund · 2026-09-03
- medium[NEW] [medium] IBM QRadar SIEM: Vulnerability enables disclosure of informationcert-bund · 2026-09-02
- medium[NEW] [medium] IBM i: Multiple vulnerabilitiescert-bund · 2026-09-02
- medium[NEW] [medium] IBM Java SDK: Vulnerability enables Denial of Servicecert-bund · 2026-09-02
- medium[NEW] [medium] IBM Tivoli Netcool/OMNIbus (Immutable.js): Multiple vulnerabilities enable denial of servicecert-bund · 2026-09-02
- medium[NEW] [medium] IBM WebSphere Application Server Liberty: Vulnerability allows denial of servicecert-bund · 2026-09-02
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