CVE-2021-33827
CVE-2021-33827 is a high-severity vulnerability in Owncloud Files Antivirus with a CVSS 3.x base score of 7.2. 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 7.2)
- CVSS v2: 9.0
- EPSS exploit prediction: 2% (80th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Owncloud Files Antivirus
- Published:
- Last modified:
Description
The files_antivirus component before 1.0.0 for ownCloud allows OS Command Injection via the administration settings.
Frequently asked questions
- What is CVE-2021-33827?
- The files_antivirus component before 1.0.0 for ownCloud allows OS Command Injection via the administration settings.
- How severe is CVE-2021-33827?
- CVE-2021-33827 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-33827 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-33827?
- CVE-2021-33827 affects Owncloud Files Antivirus. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-33827?
- 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-2021-33827 published?
- CVE-2021-33827 was published on 2022-01-15 and last updated on 2026-06-17.
References
- https://doc.owncloud.com/server/admin_manual/release_notes.html
- https://owncloud.com/security-advisories/cve-2021-33827/
Affected products (1)
- cpe:2.3:a:owncloud:files_antivirus:*:*:*:*:*:*:*:*
More vulnerabilities in Owncloud Files Antivirus
- CVE-2021-33828 — High (CVSS 8.8): The files_antivirus component before 1.0.0 for ownCloud mishandles the protection mechanism by which malicious files…
- CVE-2020-16144 — Medium (CVSS 5.7): When using an object storage like S3 as the file store, when a user creates a public link to a folder where anonymous…
All CVEs affecting Owncloud Files Antivirus →
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