CVE-2023-22956: Audiocodes 405hd Firmware

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000. Due to the use of a hard-coded cryptographic key, an attacker is able to decrypt encrypted configuration files and retrieve sensitive information.

Affected products

• Audiocodes 405hd Firmware: up to and including 3.4.4.1000
• Audiocodes 445hd Firmware: up to and including 3.4.4.1000
• Audiocodes c435hd Firmware: up to and including 3.4.4.1000
• Audiocodes c450hd Firmware: up to and including 3.4.4.1000
• Audiocodes c455hd Firmware: up to and including 3.4.4.1000
• Audiocodes c470hd Firmware: up to and including 3.4.4.1000

Published 2023-08-11. Last modified 2026-06-17.