CVE-2026-27653 Privilege escalation in Soliton SecureBrowser II
Attackers can execute arbitrary code with SYSTEM privileges due to incorrect default permissions in Soliton Systems installers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27653?
CVE-2026-27653 is a medium-severity vulnerability in Soliton SecureBrowser II, published on 27 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The installers for multiple products provided by Soliton Systems K.K. contain an issue with incorrect default permissions, which may allow arbitrary code to be executed with SYSTEM privileges.
Which versions are affected by CVE-2026-27653?
It affects 3 products.
Products include Soliton Securebrowser for Onegate, Soliton Securebrowser Ii, Soliton Secureworkspace.
How do I fix CVE-2026-27653?
No fix has been published for CVE-2026-27653 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-27653 being exploited?
There is no known exploitation of CVE-2026-27653 in the wild and no public exploit code.
Sources
Also known as GHSA-m56j-8cwc-qgv8.