How severe is CVE-2025-36038?

CVE-2025-36038 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-36038 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-36038?

CVE-2025-36038 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-36038?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-36038 have an EU (EUVD) identifier?

Yes. CVE-2025-36038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19137.

When was CVE-2025-36038 published?

CVE-2025-36038 was published on 2025-06-25 and last updated on 2026-06-17.

CVE-2025-36038

CVE-2025-36038 is a critical-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19137
Weakness: CWE-502
Affected product: Ibm Websphere Application Server
Published: 2025-06-25
Last modified: 2026-06-17

Description

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects.

Frequently asked questions

What is CVE-2025-36038?: IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects.
How severe is CVE-2025-36038?: CVE-2025-36038 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-36038 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-36038?: CVE-2025-36038 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-36038?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-36038 have an EU (EUVD) identifier?: Yes. CVE-2025-36038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19137.
When was CVE-2025-36038 published?: CVE-2025-36038 was published on 2025-06-25 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7237967

Affected products (1)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*

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