Tenda F453 1.0.0.3 httpd /goform/PPTPUserSetting fromPPTPUserSetting delno stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Tenda F453 1.0.0.3. This vulnerability affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. Such manipulation of the argument delno leads to stack-based overflow. This vulnerability is documented as CVE-2026-5021. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Tenda F453 1.0.0.3. It has been rated as critical. Affected by this issue is the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. The manipulation of the argument delno with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-5021. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-5878) and EUVD (EUVD-2026-16963). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/27/2026 Advisory disclosed
03/27/2026 +0 days VulDB entry created
03/30/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2026-5021 (🔒)
GCVE (CVE): GCVE-0-2026-5021
GCVE (VulDB): GCVE-100-353906
EUVD: 🔒
CNNVD: CNNVD-202603-5878 - Tenda F453 安全漏洞

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/27/2026 15:22
Updated: 03/30/2026 18:29
Changes: 03/27/2026 15:22 (58), 03/29/2026 04:52 (1), 03/30/2026 18:29 (6)
Complete: 🔍
Submitter: LtzHust2
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #778415: Tenda F453 v1.0.0.3 Stack-based Buffer Overflow (by LtzHust2)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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