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CVE-2025-53827— ownCloud Core: Updater has an exposed dangerous method or function

Quick assessment

Affected
owncloud ownCloud Core
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ownCloud ownCloud Core是德国ownCloud公司的一款企业级文件同步与共享平台。 ownCloud Core 10.15.3之前版本存在权限许可和访问控制问题漏洞，该漏洞源于暴露了危险的方法或函数，可能导致具有管理员权限的攻击者执行任意代码。

CVSS 9.1 · Critical EPSS 0.61% · P48

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
owncloud ownCloud Core < 10.15.3 affected
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I. Basic Information for CVE-2025-53827

Vulnerability Information
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Vulnerability Title
ownCloud Core: Updater has an exposed dangerous method or function
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
暴露危险的方法或函数
Source: CVE Program / CVE List V5
Vulnerability Title
ownCloud Core 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ownCloud ownCloud Core是德国ownCloud公司的一款企业级文件同步与共享平台。 ownCloud Core 10.15.3之前版本存在权限许可和访问控制问题漏洞，该漏洞源于暴露了危险的方法或函数，可能导致具有管理员权限的攻击者执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
owncloud ownCloud Core < 10.15.3 -

II. Public POCs for CVE-2025-53827

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8410 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2025-53827

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Vendor Advisories for CVE-2025-53827 (1)

Same Patch Batch · owncloud · 2026-07-06 · 5 CVEs total

CVE-2025-53830 9.1 CRITICAL Anti-Virus for ownCloud 10 is vulnerable to Server-Side Request Forgery (SSRF)
CVE-2025-53828 8.5 HIGH SharePoint for ownCloud 10 is vulnerable to Server-Side Request Forgery (SSRF)
CVE-2025-53831 8.2 HIGH DrawIO for ownCloud 10 is vulnerable to Stored XSS
CVE-2025-53829 8.0 HIGH ownCloud 10 is vulnerable to Relative Path Traversal

IV. Related Vulnerabilities

Same vendor: owncloud
Same weakness: CWE-749

V. Comments for CVE-2025-53827

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