How severe is CVE-2021-38363?

CVE-2021-38363 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 none, integrity high, and availability none.

Is CVE-2021-38363 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38363?

CVE-2021-38363 affects Opennetworking Onos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38363?

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-2021-38363 published?

CVE-2021-38363 was published on 2023-04-20 and last updated on 2026-06-17.

CVE-2021-38363

CVE-2021-38363 is a high-severity vulnerability in Opennetworking Onos 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-755.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Opennetworking Onos
Published: 2023-04-20
Last modified: 2026-06-17

Description

An issue was discovered in ONOS 2.5.1. In IntentManager, the install-requested intent (which causes an exception) remains in pendingMap (in memory) forever. Deletion is possible neither by a user nor by the intermittent Intent Cleanup process.

Frequently asked questions

What is CVE-2021-38363?: An issue was discovered in ONOS 2.5.1. In IntentManager, the install-requested intent (which causes an exception) remains in pendingMap (in memory) forever. Deletion is possible neither by a user nor by the intermittent Intent Cleanup process.
How severe is CVE-2021-38363?: CVE-2021-38363 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 none, integrity high, and availability none.
Is CVE-2021-38363 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38363?: CVE-2021-38363 affects Opennetworking Onos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38363?: 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-2021-38363 published?: CVE-2021-38363 was published on 2023-04-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opennetworking:onos:2.5.1:*:*:*:*:*:*:*

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