Review reviewHigh

CVE-2026-15057

IBM WebSphere Application Server - Liberty

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service due to uncontrolled heap allocation.

CVSS
7.5
EPSS
0.26%
18.1% percentile
CISA KEV
Not listed
Published
2026.07.29
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.26%
Technical severityCVSS 7.5

Vulnerability overview

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service due to uncontrolled heap allocation.

Affected product and versions

Product
IBM WebSphere Application Server - Liberty
Affected versions
>= 17.0.0.3 <= 26.0.0.7
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that IBM WebSphere Application Server - Liberty and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-787