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Vulnerability record · CVE-2022-36586 · published 8 September 2022

CVE-2022-36586: Tenda g3 firmware classic buffer overflow vulnerability

Tenda · G3 Firmware

In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by strcpy in function 0x869f4 in the httpd binary.

9.8 CVSS 3.1 Critical EPSS 0.94% · top 40.5% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score
0.94%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by strcpy in function 0x869f4 in the httpd binary.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://github.com/Davidteeri/Bug-Report/blob/main/tenda-G3-%200x869f4.md Broken LinkThird Party Advisory
https://www.tendacn.com/download/detail-3401.html PatchVendor Advisory
https://github.com/Davidteeri/Bug-Report/blob/main/tenda-G3-%200x869f4.md Broken LinkThird Party Advisory
https://www.tendacn.com/download/detail-3401.html PatchVendor Advisory

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Related vulnerabilities

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

9.8CVE-2024-4165Tenda g3 firmware stack-based buffer overflow vulnerabilityA vulnerability, which was classified as critical, was found in Tenda G3 15.11.0.17(9502). Affected is the function modifyDhcpRule of the file /gofor…EPSS 1.5%9.8CVE-2024-4164Tenda g3 firmware stack-based buffer overflow vulnerabilityA vulnerability, which was classified as critical, has been found in Tenda G3 15.11.0.17(9502). This issue affects the function formModifyPppAuthWhit…EPSS 1.5%9.8CVE-2022-36585Tenda g3 firmware classic buffer overflow vulnerabilityIn Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, in httpd binary, the addDhcpRule function has a buffer overflow caused by sscanf.EPSS 0.94%9.8CVE-2022-36587Tenda g3 firmware classic buffer overflow vulnerabilityIn Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by sprintf in function in the httpd binary.EPSS 0.94%9.8CVE-2022-36584Tenda g3 firmware classic buffer overflow vulnerabilityIn Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, the getsinglepppuser function has a buffer overflow caused by sscanf.EPSS 0.94%9.8CVE-2021-27706Tenda g1 firmware classic buffer overflow vulnerabilityBuffer Overflow in Tenda G1 and G3 routers with firmware version V15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted…EPSS 2.8%9.8CVE-2021-27707Tenda g1 firmware classic buffer overflow vulnerabilityBuffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/…EPSS 2.8%9.8CVE-2021-27705Tenda g1 firmware classic buffer overflow vulnerabilityBuffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/…EPSS 2.9%

Source: NIST National Vulnerability Database (record CVE-2022-36586), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.