How severe is CVE-2019-12121?

CVE-2019-12121 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-2019-12121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12121?

CVE-2019-12121 affects Onap Open Network Automation Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12121?

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-2019-12121 published?

CVE-2019-12121 was published on 2020-03-18 and last updated on 2026-06-17.

CVE-2019-12121

CVE-2019-12121 is a high-severity vulnerability in Onap Open Network Automation Platform 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-326.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Onap Open Network Automation Platform
Published: 2020-03-18
Last modified: 2026-06-17

Description

An issue was detected in ONAP Portal through Dublin. By executing a padding oracle attack using the ONAPPORTAL/processSingleSignOn UserId field, an attacker is able to decrypt arbitrary information encrypted with the same symmetric key as UserId. All Portal setups are affected.

Frequently asked questions

What is CVE-2019-12121?: An issue was detected in ONAP Portal through Dublin. By executing a padding oracle attack using the ONAPPORTAL/processSingleSignOn UserId field, an attacker is able to decrypt arbitrary information encrypted with the same symmetric key as UserId. All Portal setups are affected.
How severe is CVE-2019-12121?: CVE-2019-12121 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-2019-12121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12121?: CVE-2019-12121 affects Onap Open Network Automation Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12121?: 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-2019-12121 published?: CVE-2019-12121 was published on 2020-03-18 and last updated on 2026-06-17.

References

https://jira.onap.org/browse/OJSI-92

Affected products (1)

cpe:2.3:a:onap:open_network_automation_platform:*:*:*:*:*:*:*:*

More vulnerabilities in Onap Open Network Automation Platform

CVE-2019-12127 — Critical (CVSS 9.8): In ONAP OOM through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 30285,…
CVE-2019-12126 — Critical (CVSS 9.8): In ONAP DCAE through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 30285,…
CVE-2019-12125 — Critical (CVSS 9.8): In ONAP Logging through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254,…
CVE-2019-12130 — Critical (CVSS 9.8): In ONAP CLI through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 30285,…
CVE-2019-12129 — Critical (CVSS 9.8): In ONAP MSB through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 30285,…
CVE-2019-12128 — Critical (CVSS 9.8): In ONAP SO through Dublin, by accessing an applicable port (30234, 30290, 32010, 30270, 30224, 30281, 30254, 30285,…

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