CVE-2026-5021— Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-5021
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been found in Tenda F453 1.0.0.3. This affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. This manipulation of the argument delno causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda F453 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda F453是中国腾达（Tenda）公司的一款无线路由器。 Tenda F453 1.0.0.3版本存在安全漏洞，该漏洞源于组件httpd中文件/goform/PPTPUserSetting的函数fromPPTPUserSetting对参数delno操作不当，可能导致栈缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-5021
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 6938 chars
Paid plan includes:
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month
III. Intelligence Information for CVE-2026-5021
请登录查看更多情报信息。
- Submit #778415: Tenda F453 v1.0.0.3 Stack-based Buffer Overflowthird-party-advisory
- CVE-2026-5021 Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-5021
Same Patch Batch · Tenda · 2026-03-29 · 4 CVEs total
| CVE-2026-5046 | 8.8 HIGH | Tenda FH1201 Parameter WrlExtraSet formWrlExtraSet stack-based overflow |
| CVE-2026-5045 | 8.8 HIGH | Tenda FH1201 Parameter WrlclientSet stack-based overflow |
| CVE-2026-5036 | 8.8 HIGH | Tenda 4G06 Endpoint DhcpListClient fromDhcpListClient stack-based overflow |
IV. Related Vulnerabilities
Same product: F453
- CVE-2026-6989
Tenda F453 Telnet Service telnet TendaTelnet command injecti - CVE-2026-4554
Tenda F453 WriteFacMac FormWriteFacMac privilege escalation - CVE-2026-4553
Tenda F453 Parameters Natlimit fromNatlimit stack-based over - CVE-2026-4552
Tenda F453 Parameters VirtualSer fromVirtualSer memory corru - CVE-2026-4551
Tenda F453 Parameters SafeClientFilter fromSafeClientFilter
Same vendor: Tenda
- CVE-2026-8265
Tenda AC6 httpd getLogFile get_log_file os command injection - CVE-2026-8264
Tenda AC6 httpd WifiApScan formWifiApScan os command injecti - CVE-2026-8263
Tenda AC6 httpd WifiExtraSet fromSetWirelessRepeat os comman - CVE-2026-8259
Tenda AC6 httpd telnet os command injection - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2026-5021
No comments yet