Authenticated code execution via unchecked speed_dir formatting
Published Mar 15, 2024 · Updated Feb 13, 2025
Stack-based buffer overflow in Tenda AC18 15.03.05.05 allows remote authenticated users to execute code via a crafted speed_dir value. The formSetSpeedWan handler passes the POST parameter to sprintf and writes the result into a fixed-size stack buffer, allowing the return address to be overwritten. Access to the router management interface and low-privilege authentication are required; successful exploitation can seize control or crash the device.
Summary
What happened
Stack-based buffer overflow in Tenda AC18 15.03.05.05 allows remote authenticated users to execute code via a crafted speed_dir value. The formSetSpeedWan handler passes the POST parameter to sprintf and writes the result into a fixed-size stack buffer, allowing the return address to be overwritten. Access to the router management interface and low-privilege authentication are required; successful exploitation can seize control or crash the device.
The record
- CVE
- CVE-2024-2485
- Published
- Mar 15, 2024
- Updated
- Feb 13, 2025
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AC18
- Classifications
- CWE-121, CWE-787
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 15, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.03.05.05
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.
Public exploit references
- Tenda AC18 SetSpeedWan speed_dir proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo