Unauthenticated router crash via unchecked sprintf
Published Dec 8, 2022 · Updated Apr 23, 2025
Stack-based buffer overflow in Tenda W6-S 1.0.0.4(510) allows remote attackers to crash the router through an HTTP request. The WifiMacFilterGet handler passes an attacker-controlled index value to sprintf without checking the destination stack buffer size. No authentication or user interaction is required; the published demonstration establishes a service crash, while root-shell execution is asserted but not demonstrated.
Summary
What happened
Stack-based buffer overflow in Tenda W6-S 1.0.0.4(510) allows remote attackers to crash the router through an HTTP request. The WifiMacFilterGet handler passes an attacker-controlled index value to sprintf without checking the destination stack buffer size. No authentication or user interaction is required; the published demonstration establishes a service crash, while root-shell execution is asserted but not demonstrated.
The record
- CVE
- CVE-2022-45499
- Published
- Dec 8, 2022
- Updated
- Apr 23, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 8, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- WifiMacFilterGet HTTP proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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