VDB-239367 · CVE-2023-40039 · EUVD-2023-44646

Arris TG852G/TG862G/TG1672G Beacon Frame behavioral discrepancy

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Arris TG852G, TG862G and TG1672G. The impacted element is an unknown function of the component Beacon Frame Handler. Performing a manipulation results in behavioral discrepancy. This vulnerability is reported as CVE-2023-40039. The attacker must have access to the local network to execute the attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Arris TG852G, TG862G and TG1672G (affected version not known). This affects some unknown functionality of the component Beacon Frame Handler. The manipulation with an unknown input leads to a behavioral discrepancy vulnerability. CWE is classifying the issue as CWE-205. The product's behaviors indicate important differences that may be observed by unauthorized actors in a way that reveals (1) its internal state or decision process, or (2) differences from other products with equivalent functionality. This is going to have an impact on confidentiality. The summary by CVE is:

An issue was discovered on ARRIS TG852G, TG862G, and TG1672G devices. A remote attacker (in proximity to a Wi-Fi network) can derive the default WPA2-PSK value by observing a beacon frame.

The weakness was disclosed 09/11/2023. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-40039 since 08/08/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

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-2023-44646). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Arris

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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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: 🔍

Exploitinginfo

Class: Behavioral discrepancy
CWE: CWE-205 / CWE-203 / CWE-200
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

08/08/2023 🔍
09/11/2023 +34 days 🔍
09/11/2023 +0 days 🔍
01/27/2026 +869 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2023-40039 (🔍)
GCVE (CVE): GCVE-0-2023-40039
GCVE (VulDB): GCVE-100-239367
EUVD: 🔍

Entryinfo

Created: 09/11/2023 10:14
Updated: 01/27/2026 12:01
Changes: 09/11/2023 10:14 (37), 10/04/2023 18:17 (11), 09/26/2024 18:52 (16), 01/27/2026 12:01 (1)
Complete: 🔍
Cache ID: 216::103