Tenda W20E 15.11.0.6 sprintf picName buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Tenda W20E 15.11.0.6. This issue affects the function sprintf. Performing a manipulation of the argument picName results in buffer overflow. This vulnerability was named CVE-2026-24109. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Tenda W20E 15.11.0.6. This affects the function sprintf. The manipulation of the argument picName 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:

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this value is used in `sprintf` without validating variable sizes, it could lead to a buffer overflow vulnerability.

It is possible to read the advisory at tenda.com.cn. This vulnerability is uniquely identified as CVE-2026-24109 since 01/21/2026. The exploitability is told to be easy. It is possible to initiate the attack 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 03/05/2026).

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: 9.5
VulDB Meta Temp Score: 9.5

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

NVD Base Score: 9.8
NVD Vector: 🔒

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔒

CVSSv2info

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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

01/21/2026 CVE reserved
03/02/2026 +40 days Advisory disclosed
03/02/2026 +0 days VulDB entry created
03/05/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: tenda.com.cn
Status: Confirmed

CVE: CVE-2026-24109 (🔒)
GCVE (CVE): GCVE-0-2026-24109
GCVE (VulDB): GCVE-100-348363

Entryinfo

Created: 03/02/2026 16:37
Updated: 03/05/2026 18:09
Changes: 03/02/2026 16:37 (55), 03/04/2026 03:44 (11), 03/05/2026 18:09 (11)
Complete: 🔍
Cache ID: 216::103

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