Cyber Resilience

CVE-2025-36099

DoS in Ibm Websphere Application Server 8.5.0.0 … 9.0.0.0

Published
29 September 2025
Modified
03 October 2025
Patch / advisory
CVSS Score v3.1 4.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0030 22th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-36099 is a medium-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Ibm Websphere Application Server. Its CVSS base score is 4.9 (Medium).

Operationally, ranked at the 22th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-5 (Denial-of-service Protection) and SC-6 (Resource Availability) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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.

CWE(s)

Related Threats

CVEs Like This One

CVE-2024-25026Same product: Ibm Websphere Application Server
CVE-2024-27268Same product: Ibm Websphere Application Server
CVE-2024-22353Same product: Ibm Websphere Application Server
CVE-2026-11594Same product: Ibm Websphere Application Server
CVE-2026-11806Same product: Ibm Websphere Application Server
CVE-2023-35890Same product: Ibm Websphere Application Server
CVE-2025-14923Same product: Ibm Websphere Application Server
CVE-2026-11595Same product: Ibm Websphere Application Server
CVE-2023-50314Same product: Ibm Websphere Application Server
CVE-2026-11714Same product: Ibm Websphere Application Server

Affected Assets

ibm
websphere application server
8.5.0.0, 9.0.0.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SC-5 Denial-of-service Protection
  • SC-6 Resource Availability
  • SI-10 Information Input Validation
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V15.4.4

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires mechanisms to protect against or limit the effects of denial-of-service attacks that exhaust memory via crafted requests.

prevent

Requires the system to manage and limit resource allocation (memory) to prevent exhaustion from specially-crafted inputs.

prevent

Enforces validation of incoming requests to reject malformed data that would otherwise trigger unbounded memory allocation.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.IR-04 mostly match
degrades

Monitoring capacity and taking action to maintain availability directly reduces unchecked resource allocation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

detects

Baseline comparison of CPU, memory and bandwidth usage helps surface uncontrolled resource allocations before they cause service degradation.

prevents

Capacity projections and elasticity measures ensure that allocation requests are bounded and can be throttled, reducing the window in which an attacker can force unbounded resource reservations.

mitigates

Defining retention periods and deletion schedules for backup copies prevents indefinite accumulation of data on storage media without corresponding resource-management controls.

mitigates

Architectural redundancy and automatic failover limit the impact of an attacker who forces excessive allocations, because spare capacity can absorb the load until the primary instance recovers.

none

Documented incident response procedures that include activation of continuity plans and controlled recovery help ensure that resource consumption triggered by an incident is bounded and managed rather than left unbounded.

none

Mandating tested continuity procedures that preserve or replace resource-limiting controls prevents an attacker from exploiting the absence of throttling mechanisms during an outage.

References