Synology Note Station Client up to 2.2.4-702 cleartext transmission

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k1.20

Summaryinfo

A vulnerability identified as problematic has been detected in Synology Note Station Client up to 2.2.4-702. Affected is an unknown function. This manipulation causes cleartext transmission. This vulnerability is registered as CVE-2023-52951. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Synology Note Station Client up to 2.2.4-702. It has been declared as problematic. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a cleartext transmission vulnerability. The CWE definition for the vulnerability is CWE-319. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. As an impact it is known to affect confidentiality. The summary by CVE is:

A cleartext transmission of sensitive information vulnerability in Synology Note Station Client before 2.2.4-703 allows man-in-the-middle attackers to obtain user credential.

The weakness was published by Zhao Runzi. The advisory is shared at synology.com. This vulnerability is known as CVE-2023-52951 since 09/24/2024. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1040 for this issue.

Upgrading to version 2.2.4-703 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (synology): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cleartext transmission
CWE: CWE-319 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Note Station Client 2.2.4-703

Timelineinfo

09/24/2024 CVE reserved
06/03/2026 +617 days Advisory disclosed
06/03/2026 +0 days VulDB entry created
06/03/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: synology.com

Advisory: synology.com
Researcher: Zhao Runzi
Status: Confirmed

CVE: CVE-2023-52951 (🔒)
GCVE (CVE): GCVE-0-2023-52951
GCVE (VulDB): GCVE-100-368125

Entryinfo

Created: 06/03/2026 16:30
Changes: 06/03/2026 16:30 (64)
Complete: 🔍
Cache ID: 216::103

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