CVE-2020-23904: Xiph Speex

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A stack buffer overflow in speexenc.c of Speex v1.2 allows attackers to cause a denial of service (DoS) via a crafted WAV file. NOTE: the vendor states "I cannot reproduce it" and it "is a demo program.

Affected products

• Xiph Speex: version 1.2 only

Published 2021-11-10. Last modified 2026-06-17.