CVE-2025-53827

criticalCVSS 9.1covered by 1 sourcefirst seen 2026-07-06

ownCloud Core is the server-side component of the file storage, synchronization, and sharing application ownCloud Classic. In versions prior to 10.15.3, the Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function. Attackers with administrative privileges may leverage functionality to execute arbitrary code. This issue has been fixed in version 10.15.3.

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Exploitation outlook

Low exploitation risk0.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2025-53827: ownCloud Core is the server-side component of the file storage, synchronization, and sharing a…nvd · 2026-07-06

External references

NVD record for CVE-2025-53827

CVE.org record

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