VDB-308634 · CVE-2025-44039 · GCVE-0-2025-44039

CP Plus CP-XR-DE21-S 4G Router Firmware 1.031.022 UART Port improper authentication

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.
2.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in CP Plus CP-XR-DE21-S 4G Router Firmware 1.031.022 and classified as critical. The impacted element is an unknown function of the component UART Port. The manipulation results in improper authentication. This vulnerability is cataloged as CVE-2025-44039. An attack on the physical device is feasible. There is no exploit available.

Detailsinfo

A vulnerability was found in CP Plus CP-XR-DE21-S 4G Router Firmware 1.031.022. It has been classified as problematic. Affected is an unknown code of the component UART Port. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality. CVE summarizes:

CP-XR-DE21-S -4G Router Firmware version 1.031.022 was discovered to contain insecure protections for its UART console. This vulnerability allows local attackers to connect to the UART port via a serial connection, read all boot sequence, and revealing internal system details and sensitive information without any authentication.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-44039 since 04/22/2025. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Firmware Software

Vendor

CP Plus

Name

CP-XR-DE21-S 4G Router Firmware

Version

1.031.022

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.4

VulDB Base Score: 2.4
VulDB Temp Score: 2.4
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

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

04/22/2025 🔍
05/13/2025 +21 days 🔍
05/13/2025 +0 days 🔍
07/11/2025 +59 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2025-44039 (🔍)
GCVE (CVE): GCVE-0-2025-44039
GCVE (VulDB): GCVE-100-308634

Entryinfo

Created: 05/13/2025 17:15
Updated: 07/11/2025 21:22
Changes: 05/13/2025 17:15 (54), 07/11/2025 21:22 (1)
Complete: 🔍
Cache ID: 216::103