How severe is CVE-2026-5516?

CVE-2026-5516 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-5516 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5516?

CVE-2026-5516 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5516?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5516 have an EU (EUVD) identifier?

Yes. CVE-2026-5516 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32487.

When was CVE-2026-5516 published?

CVE-2026-5516 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-5516

CVE-2026-5516 is a medium-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 4.4. 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-362.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32487
Weakness: CWE-362
Affected product: Ibm Websphere Application Server
Published: 2026-05-27
Last modified: 2026-06-17

Description

IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.

Frequently asked questions

What is CVE-2026-5516?: IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.
How severe is CVE-2026-5516?: CVE-2026-5516 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-5516 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5516?: CVE-2026-5516 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5516 have an EU (EUVD) identifier?: Yes. CVE-2026-5516 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32487.
When was CVE-2026-5516 published?: CVE-2026-5516 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7273425

Affected products (1)

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

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