CVE-2026-101354: Fast FAC1203R

Critical severity, CVSS 9.6. EPSS: 0.4% chance of exploitation in the next 30 days.

A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4. The affected element is the function _tWlanTask of the component MmtAtePrase Parser. Performing a manipulation results in stack-based buffer overflow. The attacker must have access to the local network to execute the attack. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Fast FAC1203R: version 20200116_2.0.4 only

Published 2026-09-29. Last modified 2026-09-29.