VDB-180927 · CVE-2021-35392 · GCVE-0-2021-35392

Realtek Jungle SDK up to 3.4.14B WiFi Simple Config Server heap-based 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.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Realtek Jungle SDK up to 3.4.14B. It has been classified as critical. Affected is an unknown function of the component WiFi Simple Config Server. Performing a manipulation results in heap-based overflow. This vulnerability is reported as CVE-2021-35392. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Realtek Jungle SDK up to 3.4.14B. This affects an unknown code block of the component WiFi Simple Config Server. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 08/16/2021. It is possible to read the advisory at iot-inspector.com. This vulnerability is uniquely identified as CVE-2021-35392. The technical details are unknown and an exploit is not publicly available.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Realtek

Name

Jungle SDK

Version

3.4.14B

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / 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

06/23/2021 🔍
08/16/2021 +54 days 🔍
08/16/2021 +0 days 🔍
08/13/2025 +1458 days 🔍

Sourcesinfo

Advisory: iot-inspector.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-35392 (🔍)
GCVE (CVE): GCVE-0-2021-35392
GCVE (VulDB): GCVE-100-180927

Entryinfo

Created: 08/16/2021 16:22
Updated: 08/13/2025 20:29
Changes: 08/16/2021 16:22 (37), 08/18/2021 17:38 (2), 08/13/2025 20:29 (33)
Complete: 🔍
Cache ID: 216::103