How severe is CVE-2021-32163?

CVE-2021-32163 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-32163 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32163?

CVE-2021-32163 affects Linuxfoundation Modular Open Smart Network. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32163?

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

When was CVE-2021-32163 published?

CVE-2021-32163 was published on 2023-02-17 and last updated on 2026-06-17.

CVE-2021-32163

CVE-2021-32163 is a critical-severity vulnerability in Linuxfoundation Modular Open Smart Network with a CVSS 3.x base score of 9.8. 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-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Linuxfoundation Modular Open Smart Network
Published: 2023-02-17
Last modified: 2026-06-17

Description

Authentication vulnerability in MOSN v.0.23.0 allows attacker to escalate privileges via case-sensitive JWT authorization.

Frequently asked questions

What is CVE-2021-32163?: Authentication vulnerability in MOSN v.0.23.0 allows attacker to escalate privileges via case-sensitive JWT authorization.
How severe is CVE-2021-32163?: CVE-2021-32163 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-32163 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32163?: CVE-2021-32163 affects Linuxfoundation Modular Open Smart Network. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32163?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-32163 published?: CVE-2021-32163 was published on 2023-02-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:modular_open_smart_network:*:*:*:*:*:*:*:*

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