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Vulnerability record · CVE-2020-23903 · published 10 November 2021

CVE-2020-23903: Xiph speex divide by zero vulnerability

Xiph · Speex

A Divide by Zero vulnerability in the function static int read_samples of Speex v1.2 allows attackers to cause a denial of service (DoS) via a crafted WAV file.

5.5 CVSS 3.1 Medium EPSS 1.0% · top 38.1% CWE-369 · Divide by zero
5.5CVSS 3.1 base score, v2 4.3
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A Divide by Zero vulnerability in the function static int read_samples of Speex v1.2 allows attackers to cause a denial of service (DoS) via a crafted WAV file.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/xiph/speex/issues/13 ExploitIssue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LXCRAYNW5ESCE2PIGTUXZNZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R3SEV2ZRR47GSD3M7O5PH4X
https://github.com/xiph/speex/issues/13 ExploitIssue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LXCRAYNW5ESCE2PIGTUXZNZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R3SEV2ZRR47GSD3M7O5PH4X

Track CVE-2020-23903 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-23903), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.