[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in IBM WebSphere Application Server to bypass security measures and execute code.
CSIRTS triage
- What
- Multiple vulnerabilities in IBM WebSphere Application Server can be exploited to bypass security measures and execute code.
- Who is affected
- Deployments of IBM WebSphere Application Server are affected by these vulnerabilities.
- Urgency
- Remediation is high urgency due to the potential for security bypass and arbitrary code execution.
- Action
- Users should update to the latest version of IBM WebSphere Application Server to address these vulnerabilities.
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-2026-1762
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-86440.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
- Low exploitation riskCVE-2026-93110.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all scored CVEs.
- Low exploitation riskCVE-2026-93190.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
- Low exploitation riskCVE-2026-93300.49% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-8644 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9311 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9319 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9330 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for IBM WebSphere Application Server
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[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-07-09
- medium[NEW] [medium] IBM WebSphere Application Server Liberty: Vulnerability allows denial of servicecert-bund · 2026-07-08
- medium[NEW] [medium] IBM WebSphere Application Server: Vulnerability allows execution of actionscert-bund · 2026-07-08
- medium[UPDATE] [medium] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-07-03
- high[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-07-02
- high[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-07-02
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