Quick answers
- Is CVE-2026-35076 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-35076 being exploited in the wild.
- How severe is CVE-2026-35076?
- High severity, with a CVSS score of 8.1, published 3 June 2026.
- Which products and versions are affected?
- MBS GmbH Universal Gateway (UGW) A-Series Firmware < V6_0_0_7; MBS GmbH Universal Gateway (UGW) X-Series Firmware < V6_0_0_7.
- Is there a fix for CVE-2026-35076?
- A patch was published on 2026-06-03: Fixed in firmware version V6_0_0_7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-35076 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-35076?
- Check whether you run MBS GmbH Universal Gateway A-Series Firmware or MBS GmbH Universal Gateway X-Series Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability classified as External Control of File Name or Path (CWE-73) exists in the 'bac-scanresult' CGI method of the MBS Universal Gateway (UGW) web interface. The root cause is insufficient validation of user-supplied input, which allows a remote attacker with valid user-level credentials to specify and delete arbitrary files on the local filesystem. This can be used to disrupt system operations or delete configuration data. The vulnerability is addressed in firmware version V6_0_0_7.
Affected products
- MBS GmbH Universal Gateway (UGW) A-Series Firmware < V6_0_0_7
- MBS GmbH Universal Gateway (UGW) X-Series Firmware < V6_0_0_7
Timeline
- 2026-06-03: disclosed
- 2026-06-03: advisory
- 2026-06-03: patched: Fixed in firmware version V6_0_0_7