Tenda AC6 15.03.05.16 formSetCfm funcname/funcpara1/funcpara2 buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$0-$5k2.31

Summaryinfo

A vulnerability, which was classified as critical, has been found in Tenda AC6 15.03.05.16. This vulnerability affects the function formSetCfm. The manipulation of the argument funcname/funcpara1/funcpara2 leads to buffer overflow. This vulnerability is referenced as CVE-2025-52221. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Tenda AC6 15.03.05.16 and classified as critical. This issue affects the function formSetCfm. The manipulation of the argument funcname/funcpara1/funcpara2 with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-52221 since 06/16/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/29/2026).

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/16/2025 CVE reserved
04/08/2026 +296 days Advisory disclosed
04/08/2026 +0 days VulDB entry created
07/29/2026 +112 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2025-52221 (🔒)
GCVE (CVE): GCVE-0-2025-52221
GCVE (VulDB): GCVE-100-356315

Entryinfo

Created: 04/08/2026 20:43
Updated: 07/29/2026 03:01
Changes: 04/08/2026 20:43 (55), 07/29/2026 03:01 (22)
Complete: 🔍
Cache ID: 216::103

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