[UPDATE] [medium] IBM WebSphere Application Server: Multiple vulnerabilities
An attacker from an adjacent network can exploit multiple vulnerabilities in IBM WebSphere Application Server to conduct a denial of service attack or disclose information.
CSIRTS triage
- What
- Multiple vulnerabilities can be exploited to conduct a denial of service attack or disclose information.
- Who is affected
- Deployments of IBM WebSphere Application Server.
- Urgency
- Remediation is medium urgency due to the potential for denial of service and information disclosure.
- Action
- Apply the latest updates from IBM.
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-2026-1593
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-2026-44100.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-55160.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-4410 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-5516 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownexploitedMultiple vulnerabilities in IBM products (August 14, 2026)cert-fr-avis
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.
- medium[NEW] [medium] IBM WebSphere Application Server: Vulnerability allows execution of actionscert-bund · 2026-08-25
- high[UPDATE] [high] IBM WebSphere Application Server and Application Server Liberty: Multiple vulnerabilitiescert-bund · 2026-08-25
- high[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-08-25
- medium[NEW] [medium] IBM WebSphere Application Server: Multiple vulnerabilities enable Denial of Servicecert-bund · 2026-08-25
- high[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-08-25
- high[UPDATE] [high] IBM WebSphere Application Server: Multiple vulnerabilitiescert-bund · 2026-08-25
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