Memory corruption via schedStartTime stack overflow
Published Nov 3, 2022 · Updated May 2, 2025
Stack-based buffer overflow in Tenda AC23 firmware 16.03.07.45_cn allows remote attackers to corrupt memory via a crafted Wi-Fi schedule request. The setSchedWifi handler passes the attacker-controlled schedStartTime value to strcpy without checking whether it fits the destination stack buffer. No authentication or user interaction is required, and successful exploitation can fully compromise the affected router.
Summary
What happened
Stack-based buffer overflow in Tenda AC23 firmware 16.03.07.45_cn allows remote attackers to corrupt memory via a crafted Wi-Fi schedule request. The setSchedWifi handler passes the attacker-controlled schedStartTime value to strcpy without checking whether it fits the destination stack buffer. No authentication or user interaction is required, and successful exploitation can fully compromise the affected router.
The record
- CVE
- CVE-2022-43106
- Published
- Nov 3, 2022
- Updated
- May 2, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 3, 2022CVE publishedPublication date reported by the CVE source.
- May 2, 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.
Weakness, pattern, technique
Public exploit references
- Tenda AC23 setSchedWifi proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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