Administrator code execution via exposed Updater function
Published Jul 6, 2026 · Updated Jul 6, 2026
Exposed dangerous functionality in the Updater of ownCloud Core before 10.15.3 allows remote authenticated users to execute arbitrary code. The vendor advisory does not identify the exposed Updater method or explain how it processes attacker-controlled input. An ownCloud administrator account and network access to the Updater are required, and exploitation needs no additional user interaction.
Summary
What happened
Exposed dangerous functionality in the Updater of ownCloud Core before 10.15.3 allows remote authenticated users to execute arbitrary code. The vendor advisory does not identify the exposed Updater method or explain how it processes attacker-controlled input. An ownCloud administrator account and network access to the Updater are required, and exploitation needs no additional user interaction.
The record
- CVE
- CVE-2025-53827
- Published
- Jul 6, 2026
- Updated
- Jul 6, 2026
- Vendor
- ownCloud
- Product
- ownCloud Core
- Classifications
- CWE-749, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jul 6, 2026CVE publishedPublication date reported by the CVE source.
- Jul 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 10.15.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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