CVE-2026-101039: Fast FAC1900R

Critical severity, CVSS 10.0. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability was identified in FAST FAC1900R 20190827_2.0.2. Affected by this issue is the function copy_msg_element of the component devdiscover Service. Such manipulation leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Fast FAC1900R: version 20190827_2.0.2 only

Published 2026-09-28. Last modified 2026-09-28.