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Vulnerability record · CVE-2018-16333 · published 2 September 2018

CVE-2018-16333: Tendacn ac18 firmware memory buffer overflow vulnerability

Tendacn · Ac18 Firmware

An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerability in the router's web server. While processing the ssid parameter for a POST request, the value is directly used in a sprintf call to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.

7.5 CVSS 3.0 High EPSS 1.7% · top 22.7% CWE-119 · Memory buffer overflow
7.5CVSS 3.0 base score, v2 7.8
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerability in the router's web server. While processing the ssid parameter for a POST request, the value is directly used in a sprintf call to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ZIllR0/Routers/blob/master/Tenda/oob1.md ExploitThird Party Advisory
https://github.com/ZIllR0/Routers/blob/master/Tenda/oob1.md ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-33182Tendacn ac18 firmware out-of-bounds write vulnerabilityTenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow vulnerability via the deviceId parameter at ip/goform/addWifiMacFil…EPSS 0.61%9.8CVE-2024-33180Tendacn ac18 firmware out-of-bounds write vulnerabilityTenda AC18 V15.03.3.10_EN was discovered to contain a stack-based buffer overflow vulnerability via the deviceId parameter at ip/goform/saveParentCon…EPSS 0.63%9.8CVE-2023-40942Tendacn ac9 firmware out-of-bounds write vulnerabilityTenda AC9 V3.0BR_V15.03.06.42_multi_TD01 was discovered stack overflow via parameter 'firewall_value' at url /goform/SetFirewallCfg.EPSS 0.84%9.8CVE-2023-37144Tendacn ac10 firmware command injection vulnerabilityTenda AC10 v15.03.06.26 was discovered to contain a command injection vulnerability via the mac parameter in the function formWriteFacMac.EPSS 2.4%9.8CVE-2022-40865Tendacn ac15 firmware out-of-bounds write vulnerabilityTenda AC15 and AC18 routers V15.03.05.19 contain heap overflow vulnerabilities in the function setSchedWifi with the request /goform/openSchedWifi/EPSS 1.5%9.8CVE-2022-40862Tendacn ac15 firmware out-of-bounds write vulnerabilityTenda AC15 and AC18 router V15.03.05.19 contains stack overflow vulnerability in the function fromNatStaticSetting with the request /goform/NatStatic…EPSS 1.5%9.8CVE-2022-40853Tendacn ac15 firmware out-of-bounds write vulnerabilityTenda AC15 router V15.03.05.19 contains a stack overflow via the list parameter at /goform/fast_setting_wifi_setEPSS 1.2%9.8CVE-2022-40869Tendacn ac15 firmware out-of-bounds write vulnerabilityTenda AC15 and AC18 routers V15.03.05.19 contain stack overflow vulnerabilities in the function fromDhcpListClient with a combined parameter "list*" …EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2018-16333), CISA KEV, FIRST EPSS (scores of 2026-10-17). This page is refreshed as NVD updates the record.