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Vulnerabilities

Vulnerability · CVE-2025-36099

IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request.

Published Sep 29, 2025 · catalog updated Sep 29, 2025 · IBM WebSphere Application Server

Last checked Oct 23, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-36099. EPSS is 0.32%. Act only if a listed version of IBM WebSphere Application Server is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.32%
Remediation
Vendor / distro source
Affected products
vendor IBM WebSphere Application Server 8.5

IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A privileged user could exploit this vulnerability to cause the server to consume memory resources.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor IBM WebSphere Application Server 8.58.5

How to fix CVE-2025-36099

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-36099. EPSS is 0.32%. Act only if a listed version of IBM WebSphere Application Server is installed.

Which versions are affected?

Compare what you have installed with IBM WebSphere Application Server 8.5 8.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 29, 2025 · EUVD

    Detected

    IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A privileged user could exploit this vulnerability to cause the server to consume memory resources.

  2. Sep 29, 2025 · EUVD

    Updated

    IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A privileged user could exploit this vulnerability to cause the server to consume memory resources.

Sources

  • CVE.orgVulnerability recordCVE-2025-36099

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-36099

    30-day exploitation probability 0.32%

    first.org
  • EUVDVulnerability recordEUVD-2025-31604

    IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A privileged user could exploit this vulnerability to cause the server to consume memory resources.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 23, 2026
  • EUVDOct 23, 2026