CVE-2023-52951 Information disclosure in Synology Note Station Client

Medium 5.9 Published Updated

Man-in-the-middle attackers can intercept user credentials due to cleartext transmission in the Synology Note Station Client.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-52951?

CVE-2023-52951 is a medium-severity vulnerability in Synology Note Station Client, published on 3 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-319

Which versions are affected by CVE-2023-52951?

It affects 1 product.

Products include Synology Note Station Client.

How do I fix CVE-2023-52951?

No fix has been published for CVE-2023-52951 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-52951 being exploited?

There is no known exploitation of CVE-2023-52951 in the wild and no public exploit code.

Sources

Also known as GHSA-qcc6-8w82-xq69.

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