CVE-2023-49042
CWE-787Published: November 27, 2023· Updated: Jun 17, 2026
Official Description
Heap Overflow vulnerability in Tenda AX1803 v.1.0.0.1 allows a remote attacker to execute arbitrary code via the schedStartTime parameter or the schedEndTime parameter in the function setSchedWifi.
Risk Analysis
A heap overflow vulnerability in Tenda AX1803 firmware allows remote attackers to execute arbitrary code via specific parameters. The CVSS score of 9.8 highlights the critical nature of this remote execution flaw.
No public exploit is known, and the vulnerability is not currently in the CISA KEV catalog.
Users should apply the latest firmware updates provided by Tenda for the AX1803 device.
Technical Analysis
CVE-2023-49042 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-49042 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts