How severe is CVE-2018-1821?

CVE-2018-1821 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2018-1821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1821?

CVE-2018-1821 affects Ibm Operational Decision Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1821?

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.

When was CVE-2018-1821 published?

CVE-2018-1821 was published on 2018-12-13 and last updated on 2026-06-17.

CVE-2018-1821

CVE-2018-1821 is a high-severity vulnerability in Ibm Operational Decision Manager with a CVSS 3.x base score of 7.1. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-611.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 6.4
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Ibm Operational Decision Manager
Published: 2018-12-13
Last modified: 2026-06-17

Description

IBM Operational Decision Management 8.5, 8.6, 8.7, 8.8, and 8.9 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 150170.

Frequently asked questions

What is CVE-2018-1821?: IBM Operational Decision Management 8.5, 8.6, 8.7, 8.8, and 8.9 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 150170.
How severe is CVE-2018-1821?: CVE-2018-1821 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2018-1821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1821?: CVE-2018-1821 affects Ibm Operational Decision Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1821?: 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.
When was CVE-2018-1821 published?: CVE-2018-1821 was published on 2018-12-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:operational_decision_manager:*:*:*:*:*:*:*:*

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