Authenticated code execution via unchecked filename copy
Published Jan 2, 2026 · Updated Jan 2, 2026
Classic buffer overflow in UTT 进取 512W 1.7.7-171114 allows remote authenticated users to crash the service or execute code via filename. The formFtpServerDirConfig handler copies the filename value with strcpy into a fixed-size destination when Action is add, without checking its length. HTTP Digest management credentials are required; an oversized form value can corrupt memory, interrupt the management service, or execute code on the router.
Summary
What happened
Classic buffer overflow in UTT 进取 512W 1.7.7-171114 allows remote authenticated users to crash the service or execute code via filename. The formFtpServerDirConfig handler copies the filename value with strcpy into a fixed-size destination when Action is add, without checking its length. HTTP Digest management credentials are required; an oversized form value can corrupt memory, interrupt the management service, or execute code on the router.
The record
- CVE
- CVE-2025-15431
- Published
- Jan 2, 2026
- Updated
- Jan 2, 2026
- Vendor
- Shanghai Aitai Technology Co., Ltd.
- Product
- 进取 512W
- Classifications
- CWE-119, CWE-120, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 2, 2026CVE publishedPublication date reported by the CVE source.
- Jan 2, 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=1.7.7-171114
What conditions does exploitation require?
What is affected?
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
- HTTP POST filename buffer-overflow PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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