Service crash or command execution via backup path
Published Dec 7, 2025 · Updated Jan 28, 2026
Buffer overflow in nas_svr on UGREEN DH2100+ 5.3.0.251125 and earlier allows remote authenticated users to crash the service. handler_file_backup_create copies the attacker-controlled path into an output buffer without checking that the input fits. High-privilege access to the network API is required; successful exploitation interrupts nas_svr or executes arbitrary commands on the NAS.
Summary
What happened
Buffer overflow in nas_svr on UGREEN DH2100+ 5.3.0.251125 and earlier allows remote authenticated users to crash the service. handler_file_backup_create copies the attacker-controlled path into an output buffer without checking that the input fits. High-privilege access to the network API is required; successful exploitation interrupts nas_svr or executes arbitrary commands on the NAS.
The record
- CVE
- CVE-2025-14187
- Published
- Dec 7, 2025
- Updated
- Jan 28, 2026
- Vendor
- UGREEN
- Product
- DH2100+
- Classifications
- CWE-120, CWE-119, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Dec 7, 2025CVE publishedPublication date reported by the CVE source.
- Jan 28, 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=5.3.0.251125
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
- UGREEN DH2100+ NAS V4.2.0.601 buffer-overflow proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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