Authenticated memory corruption via unchecked submit-url copy
Published Sep 1, 2025 · Updated Sep 2, 2025
Buffer overflow in TOTOLINK A702R 4.0.0-B20211108.1423 allows remote authenticated users to corrupt memory via submit-url. The sub_4466F8 routine in /boafrm/formOneKeyAccessButton copies the attacker-controlled submit-url value without adequate bounds checking. Access to the router management interface and low-privileged authentication are required; the public record does not establish whether exploitation crashes the router or enables code execution.
Summary
What happened
Buffer overflow in TOTOLINK A702R 4.0.0-B20211108.1423 allows remote authenticated users to corrupt memory via submit-url. The sub_4466F8 routine in /boafrm/formOneKeyAccessButton copies the attacker-controlled submit-url value without adequate bounds checking. Access to the router management interface and low-privileged authentication are required; the public record does not establish whether exploitation crashes the router or enables code execution.
The record
- CVE
- CVE-2025-9782
- Published
- Sep 1, 2025
- Updated
- Sep 2, 2025
- Vendor
- TOTOLINK
- Product
- A702R
- Classifications
- CWE-120, CWE-119
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 1, 2025CVE publishedPublication date reported by the CVE source.
- Sep 2, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=4.0.0-B20211108.1423
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
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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