VDB-242004 · CVE-2023-40829 · EUVD-2023-45369

Tencent Wechat Privatization 2.6.930000/2.x improper authorization

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 classified as critical was found in Tencent Wechat Privatization 2.6.930000/2.x. This issue affects some unknown processing. The manipulation results in improper authorization. This vulnerability is cataloged as CVE-2023-40829. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Tencent Wechat Privatization 2.6.930000/2.x (Chat Software). Affected is an unknown function. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

There is an interface unauthorized access vulnerability in the background of Tencent Enterprise Wechat Privatization 2.5.x and 2.6.930000.

The weakness was shared 10/12/2023. The advisory is shared for download at gist.github.com. This vulnerability is traded as CVE-2023-40829 since 08/22/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

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-2023-45369). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Chat Software

Vendor

Tencent

Name

Wechat Privatization

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

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 authorization
CWE: CWE-285 / CWE-266
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

08/22/2023 🔍
10/12/2023 +51 days 🔍
10/12/2023 +0 days 🔍
01/29/2026 +840 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2023-40829 (🔍)
GCVE (CVE): GCVE-0-2023-40829
GCVE (VulDB): GCVE-100-242004
EUVD: 🔍

Entryinfo

Created: 10/12/2023 09:16
Updated: 01/29/2026 09:57
Changes: 10/12/2023 09:16 (38), 10/31/2023 12:09 (11), 01/29/2026 09:57 (16)
Complete: 🔍
Cache ID: 216::103