CVE-2019-9229: Audiocodes Median 500-Msbr Firmware

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue was discovered on AudioCodes Mediant 500L-MSBR, 500-MBSR, M800B-MSBR and 800C-MSBR devices with firmware versions F7.20A to F7.20A.251. An internal interface exposed to the link-local address 169.254.254.253 allows attackers in the local network to access multiple quagga VTYs. Attackers can authenticate with the default 1234 password that cannot be changed, and can execute malicious and unauthorized actions.

Affected products

• Audiocodes Median 500-Msbr Firmware: from f7.20a, up to and including f7.20a.251
• Audiocodes Median 500l-Msbr Firmware: from f7.20a, up to and including f7.20a.251
• Audiocodes Median 800c-Msbr Firmware: from f7.20a, up to and including f7.20a.251
• Audiocodes Median m800b-Msbr Firmware: from f7.20a, up to and including f7.20a.251

Published 2019-07-20. Last modified 2026-06-17.