Authenticated web-service crash via buffer overflow
Published Jul 29, 2025 · Updated Jul 29, 2025
Buffer overflow in TP-Link TL-WR841N v11 build 160325 and earlier allows remote authenticated users to crash the HTTP service. The /userRpm/Wan6to4TunnelCfgRpm.htm handler accepts an input parameter without validating it before memory-buffer processing, allowing the buffer bounds to be exceeded. Administrative access is required, and successful exploitation interrupts only the web service until the router is rebooted.
Summary
What happened
Buffer overflow in TP-Link TL-WR841N v11 build 160325 and earlier allows remote authenticated users to crash the HTTP service. The /userRpm/Wan6to4TunnelCfgRpm.htm handler accepts an input parameter without validating it before memory-buffer processing, allowing the buffer bounds to be exceeded. Administrative access is required, and successful exploitation interrupts only the web service until the router is rebooted.
The record
- CVE
- CVE-2025-53715
- Published
- Jul 29, 2025
- Updated
- Jul 29, 2025
- Vendor
- TP-Link Systems Inc.
- Product
- TL-WR841N
- Classifications
- CWE-119, T1499.004
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jul 29, 2025CVE publishedPublication date reported by the CVE source.
- Jul 29, 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=0 <=160325
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.
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