How severe is CVE-2021-33633?

CVE-2021-33633 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-33633 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33633?

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-2021-33633 have an EU (EUVD) identifier?

Yes. CVE-2021-33633 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-20310.

When was CVE-2021-33633 published?

CVE-2021-33633 was published on 2024-03-23 and last updated on 2026-06-17.

CVE-2021-33633

CVE-2021-33633 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-20310
Weakness: CWE-78
Published: 2024-03-23
Last modified: 2026-06-17

Description

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in openEuler aops-ceres on Linux allows Command Injection. This vulnerability is associated with program files ceres/function/util.Py. This issue affects aops-ceres: from 1.3.0 through 1.4.1.

Frequently asked questions

What is CVE-2021-33633?: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in openEuler aops-ceres on Linux allows Command Injection. This vulnerability is associated with program files ceres/function/util.Py. This issue affects aops-ceres: from 1.3.0 through 1.4.1.
How severe is CVE-2021-33633?: CVE-2021-33633 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-33633 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-33633?: 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-2021-33633 have an EU (EUVD) identifier?: Yes. CVE-2021-33633 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-20310.
When was CVE-2021-33633 published?: CVE-2021-33633 was published on 2024-03-23 and last updated on 2026-06-17.

References

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