VDB-315828 · CVE-2025-44526 · EUVD-2025-20831

Realtek RTL8762EKF-EVB RTL8762E SDK 1.4.0 Bluetooth Low Energy LL_Length_Req denial of service

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.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Realtek RTL8762EKF-EVB RTL8762E SDK 1.4.0. The impacted element is the function LL_Length_Req of the component Bluetooth Low Energy. The manipulation results in denial of service. This vulnerability was named CVE-2025-44526. The attack needs to be approached within the local network. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in Realtek RTL8762EKF-EVB RTL8762E SDK 1.4.0. Affected is the function LL_Length_Req of the component Bluetooth Low Energy. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Realtek RTL8762EKF-EVB RTL8762E SDK V1.4.0 was discovered to utilize insufficient permission checks on critical fields within Bluetooth Low Energy (BLE) data packets. This issue allows attackers to cause a Denial of Service (DoS) via a crafted LL_Length_Req packet.

This vulnerability is traded as CVE-2025-44526 since 04/22/2025. The exploitability is told to be easy. The attack can only be initiated within the local network. The exploitation doesn't require any form of authentication. 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-20831). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Realtek

Name

RTL8762EKF-EVB RTL8762E SDK

Version

1.4.0

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/22/2025 CVE reserved
07/09/2025 +78 days Advisory disclosed
07/09/2025 +0 days VulDB entry created
07/18/2025 +9 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2025-44526 (🔒)
GCVE (CVE): GCVE-0-2025-44526
GCVE (VulDB): GCVE-100-315828
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/09/2025 18:29
Updated: 07/18/2025 23:10
Changes: 07/09/2025 18:29 (56), 07/09/2025 19:35 (1), 07/18/2025 23:10 (1)
Complete: 🔍
Cache ID: 216::103