Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
🛡️
Not in CISA KEV
MEDIUM severity

CVE-2026-9327 — Websphere Application Server

MEDIUM

CVE-2026-9327 is a medium-severity (CVSS 6.3) Improper Privilege Management vulnerability in ibm websphere application server. A fix is available — see the affected versions and patch details below.

IBM WebSphere Application Server 9.0, and 8.5 could allow an authenticated user with a low-privilege administrative role to modify security configuration. This could result in information…

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-9327.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs29th percentile — riskier than 29% of all scored CVEsHighest risk
0.00%0.29%0.58%0.87%0.4%0.4%Oct 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-9327 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Description

IBM WebSphere Application Server 9.0, and 8.5 could allow an authenticated user with a low-privilege administrative role to modify security configuration. This could result in information disclosure or denial of service.

Affected Products

1 product · 2 configurations
Application
websphere application serveribm
≥ 9.0.0.0 && < 9.0.5.29
range

Detection & mitigation playbook

Vendor / appliance

  1. Detect

    Inventory every ibm websphere application server deployment and check each version against the affected-products list above.

  2. Fix

    Apply the ibm websphere application server security patch or hotfix for CVE-2026-9327 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Close the privilege gap rather than the entry point: audit which accounts, roles and service identities can reach the affected operation, drop the component to the least privilege it actually needs, and review file and directory permissions created by earlier installs — a default left in place is what makes this reachable. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

IBM WebSphere Application Server 9.0, and 8.5 could allow an authenticated user with a low-privilege administrative role to modify security configuration. This could result in information disclosure or denial of service.
O3 Security · Runtime Protection

Is CVE-2026-9327 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works
CVE-2026-9327: Websphere Application Server