CVE-2025-7420
Tenda O3V2 HTTPd Stack-Based Buffer Overflow
Description
A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been declared as critical. This vulnerability affects the function formWifiBasicSet of the file /goform/setWrlBasicInfo of the component httpd. The manipulation of the argument extChannel leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
INFO
Published Date :
July 11, 2025, 12:15 a.m.
Last Modified :
July 16, 2025, 4:40 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the Tenda O3V2 firmware to the latest version.
- Apply vendor-provided security patches.
- Restrict network access to the affected device.
- Monitor for suspicious network activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-7420.
| URL | Resource |
|---|---|
| https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md | Exploit Third Party Advisory |
| https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc | Exploit Third Party Advisory |
| https://vuldb.com/?ctiid.315880 | Permissions Required |
| https://vuldb.com/?id.315880 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.608866 | Third Party Advisory VDB Entry |
| https://www.tenda.com.cn/ | Product |
| https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md | Exploit Third Party Advisory |
| https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-7420 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-7420
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-7420 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-7420 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 16, 2025
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:tenda:o3_firmware:1.0.0.12(3880):*:*:*:*:*:*:* OR cpe:2.3:h:tenda:o3:2.0:*:*:*:*:*:*:* Added Reference Type CISA-ADP: https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md Types: Exploit, Third Party Advisory Added Reference Type CISA-ADP: https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.315880 Types: Permissions Required Added Reference Type VulDB: https://vuldb.com/?id.315880 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.608866 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://www.tenda.com.cn/ Types: Product -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 11, 2025
Action Type Old Value New Value Added Reference https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md Added Reference https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc -
New CVE Received by [email protected]
Jul. 11, 2025
Action Type Old Value New Value Added Description A vulnerability was found in Tenda O3V2 1.0.0.12(3880). It has been declared as critical. This vulnerability affects the function formWifiBasicSet of the file /goform/setWrlBasicInfo of the component httpd. The manipulation of the argument extChannel leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CWE CWE-119 Added CWE CWE-121 Added Reference https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md Added Reference https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_53/53.md#poc Added Reference https://vuldb.com/?ctiid.315880 Added Reference https://vuldb.com/?id.315880 Added Reference https://vuldb.com/?submit.608866 Added Reference https://www.tenda.com.cn/