How severe is CVE-2026-16435?

CVE-2026-16435 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-16435 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-16435?

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

When was CVE-2026-16435 published?

CVE-2026-16435 was published on 2026-09-14 and last updated on 2026-09-16.

CVE-2026-16435

CVE-2026-16435 is a medium-severity vulnerability with a CVSS 3.x base score of 5.9. 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-650.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-650
Published: 2026-09-14
Last modified: 2026-09-16

Description

IBM WebSphere Application Server 9.0, and 8.5 is affected by an authentication bypass vulnerability when using XD or Intelligent-Management features.

Frequently asked questions

What is CVE-2026-16435?: IBM WebSphere Application Server 9.0, and 8.5 is affected by an authentication bypass vulnerability when using XD or Intelligent-Management features.
How severe is CVE-2026-16435?: CVE-2026-16435 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-16435 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-16435?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-16435 published?: CVE-2026-16435 was published on 2026-09-14 and last updated on 2026-09-16.

References

https://www.ibm.com/support/pages/node/7286610

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