CVE-2026-3729
Tenda F453 PPTPDClient fromPptpUserAdd stack-based overflow
Description
A vulnerability was identified in Tenda F453 1.0.0.3/3.As. Impacted is the function fromPptpUserAdd of the file /goform/PPTPDClient. Such manipulation of the argument username/opttype leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
INFO
Published Date :
March 8, 2026, 11:15 a.m.
Last Modified :
March 9, 2026, 3:24 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 Tenda F453 firmware to a patched version.
- Restrict remote access to the affected device.
- Implement input validation on username and opttype.
Public PoC/Exploit Available at Github
CVE-2026-3729 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2026-3729.
| URL | Resource |
|---|---|
| https://github.com/Litengzheng/vul_db/blob/main/F453/vul_98/README.md | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.349707 | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.349707 | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.766934 | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3729 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-2026-3729
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).
command injection
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3729 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-3729 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]
Mar. 09, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:tenda:f453_firmware:1.0.0.3:*:*:*:*:*:*:* OR cpe:2.3:h:tenda:f453:-:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/Litengzheng/vul_db/blob/main/F453/vul_98/README.md Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.349707 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.349707 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.766934 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://www.tenda.com.cn/ Types: Product -
New CVE Received by [email protected]
Mar. 08, 2026
Action Type Old Value New Value Added Description A vulnerability was identified in Tenda F453 1.0.0.3/3.As. Impacted is the function fromPptpUserAdd of the file /goform/PPTPDClient. Such manipulation of the argument username/opttype leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might 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/Litengzheng/vul_db/blob/main/F453/vul_98/README.md Added Reference https://vuldb.com/?ctiid.349707 Added Reference https://vuldb.com/?id.349707 Added Reference https://vuldb.com/?submit.766934 Added Reference https://www.tenda.com.cn/