How severe is CVE-2026-3366?

CVE-2026-3366 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-3366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3366?

CVE-2026-3366 primarily affects Ibm Infosphere Optim Test Data Fabrication. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-3366?

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

Does CVE-2026-3366 have an EU (EUVD) identifier?

Yes. CVE-2026-3366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32274.

When was CVE-2026-3366 published?

CVE-2026-3366 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-3366

CVE-2026-3366 is a high-severity vulnerability in Ibm Infosphere Optim Test Data Fabrication with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32274
Weakness: CWE-22
Affected product: Ibm Infosphere Optim Test Data Fabrication
Published: 2026-05-27
Last modified: 2026-06-17

Description

IBM InfoSphere Optim Test Data Fabrication 1.0.0, 1.0.0.1, 1.0.0.2, 1.0.2, 1.0.2.2, 1.0.2.3, 1.0.2.4, 1.0.2.5, 1.0.2.6, 1.0.2.7 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system

Frequently asked questions

What is CVE-2026-3366?: IBM InfoSphere Optim Test Data Fabrication 1.0.0, 1.0.0.1, 1.0.0.2, 1.0.2, 1.0.2.2, 1.0.2.3, 1.0.2.4, 1.0.2.5, 1.0.2.6, 1.0.2.7 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system
How severe is CVE-2026-3366?: CVE-2026-3366 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-3366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3366?: CVE-2026-3366 primarily affects Ibm Infosphere Optim Test Data Fabrication. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-3366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3366 have an EU (EUVD) identifier?: Yes. CVE-2026-3366 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32274.
When was CVE-2026-3366 published?: CVE-2026-3366 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7272653

Affected products (10)

cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_optim_test_data_fabrication:1.0.2.7:*:*:*:*:*:*:*

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