Authenticated code execution via unbounded sprintf
Published Jun 3, 2024 · Updated Feb 13, 2025
Stack-based buffer overflow in TRENDnet TEW-827DRU firmware through 2.06B04 allows remote authenticated users to execute arbitrary code. In www/cgi/ssi, function 0x4434B0 passes the attacker-controlled dns1 value to sprintf without a demonstrated length bound, overflowing a stack buffer. Access to the router management interface and valid credentials is required; successful exploitation runs code in the appliance firmware context.
Summary
What happened
Stack-based buffer overflow in TRENDnet TEW-827DRU firmware through 2.06B04 allows remote authenticated users to execute arbitrary code. In www/cgi/ssi, function 0x4434B0 passes the attacker-controlled dns1 value to sprintf without a demonstrated length bound, overflowing a stack buffer. Access to the router management interface and valid credentials is required; successful exploitation runs code in the appliance firmware context.
The record
- CVE
- CVE-2024-36728
- Published
- Jun 3, 2024
- Updated
- Feb 13, 2025
- Vendor
- TRENDnet
- Product
- TEW-827DRU Firmware
- Classifications
- CWE-121, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 3, 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=2.06B04
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.
Public exploit references
- HouseFuzz vlan_setting request 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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