VDB-347997 · Submit #759606 · CVE-2026-3273

Tenda F453 1.0.0.3 httpd /goform/AdvSetWrlsafeset formWrlsafeset mit_ssid_index buffer overflow

Summaryinfo

A vulnerability classified as critical has been found in Tenda F453 1.0.0.3. Affected by this issue is the function formWrlsafeset of the file /goform/AdvSetWrlsafeset of the component httpd. Performing a manipulation of the argument mit_ssid_index results in buffer overflow. This vulnerability is reported as CVE-2026-3273. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, was found in Tenda F453 1.0.0.3. This affects the function formWrlsafeset of the file /goform/AdvSetWrlsafeset of the component httpd. The manipulation of the argument mit_ssid_index with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-3273. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known.

The exploit is shared for download 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.

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Productinfo

Type

Router Operating System

Vendor

Tenda

Name

F453

Version

1.0.0.3

License

commercial

Website

Vendor: https://www.tenda.com.cn/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/26/2026 Advisory disclosed
02/26/2026 +0 days VulDB entry created
02/26/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2026-3273 (🔒)
GCVE (CVE): GCVE-0-2026-3273
GCVE (VulDB): GCVE-100-347997
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/26/2026 16:21
Changes: 02/26/2026 16:21 (58)
Complete: 🔍
Submitter: LtzHust
Cache ID: 216::103

Submitinfo

Accepted

Submit #759606: Tenda F453 v1.0.0.3 Buffer Access Using Size of Source Buffer (by LtzHust)