MEDIUM
CVE-2020-23903
CWE-369Published: November 10, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official 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.
Technical Analysis
CVE-2020-23903 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
https://github.com/xiph/speex/issues/13Exploit · Issue Tracking · Patch · Third Party Advisory
→
https://github.com/xiph/speex/issues/13Exploit · Issue Tracking · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2020-23903
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-369
CISA KEVNo
Affected2 vendor(s)
PublishedNov 10, 2021
Related CVEs (CWE-369)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-23903 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.