[UPDATE] [medium] IBM WebSphere Application Server: Multiple vulnerabilities

mediumCVE-2026-4410 CVE-2026-5516

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

vendor: IBM product: WebSphere Application Server Denial of service Information disclosure

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

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-03
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

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 39% of all 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 12% of all 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

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
high[UPDATE] [high] 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