CVE-2021-26564 Information disclosure in Synology DiskStation Manager (DSM)
Man-in-the-middle attackers can intercept sensitive information and spoof servers due to cleartext transmission in Synology DSM.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-26564?
CVE-2021-26564 is a high-severity vulnerability in Synology Diskstation Manager, published on 26 Feb 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cleartext transmission of sensitive information vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to spoof servers via an HTTP session.
Weakness: CWE-319
Which versions are affected by CVE-2021-26564?
It affects 4 products.
Products include Synology Diskstation Manager, Synology Diskstation Manager Unified Controller, Synology Skynas Firmware, Synology Vs960hd Firmware.
How do I fix CVE-2021-26564?
No fix has been published for CVE-2021-26564 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26564 being exploited?
There is no known exploitation of CVE-2021-26564 in the wild and no public exploit code.
Other vulnerabilities in Synology Diskstation Manager
Sources
Also known as GHSA-77r2-rjfh-m7wh.