VDB-314781 · CVE-2025-50262 · EUVD-2025-19882

Tenda AC6 15.03.05.16 formSetQosBand list buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Tenda AC6 15.03.05.16. It has been classified as critical. Impacted is the function formSetQosBand. Performing a manipulation of the argument list results in buffer overflow. This vulnerability is identified as CVE-2025-50262. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Tenda AC6 15.03.05.16. It has been classified as critical. This affects the function formSetQosBand. The manipulation of the argument list 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 summary by CVE is:

Tenda AC6 v15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetQosBand function via the list parameter.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-50262 since 06/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/07/2025).

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 vulnerability database at EUVD (EUVD-2025-19882). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Router Operating System

Vendor

Tenda

Name

Version

15.03.05.16

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: 8.5

VulDB Base Score: 8.8
VulDB Temp Score: 8.5
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: 🔒
Status: Not defined

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

06/16/2025 CVE reserved
07/03/2025 +17 days Advisory disclosed
07/03/2025 +0 days VulDB entry created
07/07/2025 +4 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2025-50262 (🔒)
GCVE (CVE): GCVE-0-2025-50262
GCVE (VulDB): GCVE-100-314781
EUVD: 🔒

Entryinfo

Created: 07/03/2025 16:12
Updated: 07/07/2025 18:52
Changes: 07/03/2025 16:12 (55), 07/03/2025 17:17 (1), 07/07/2025 18:52 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.