CVE-2023-26805
CWE-787Published: March 19, 2023· Updated: Jun 17, 2026
Official Description
Tenda W20E v15.11.0.6 (US_W20EV4.0br_v15.11.0.6(1068_1546_841)_CN_TDC) is vulnerable to Buffer Overflow via function formIPMacBindModify.
Risk Analysis
Tenda W20E firmware contains a buffer overflow vulnerability in the formIPMacBindModify function. This critical flaw allows for remote code execution or system crashes, and the high CVSS score reflects the potential for full system compromise.
There is no known public exploit for this vulnerability, and it is not listed in CISA's KEV catalog. It is remotely exploitable with low attack complexity.
Users should check for and apply the latest firmware updates provided by Tenda for the W20E device.
Technical Analysis
CVE-2023-26805 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-2023-26805 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts