CVE-2009-0186

Integer overflow in libsndfile 1.0.18, as used in Winamp and other products, allows context-dependent attackers to execute arbitrary code via crafted description chunks in a CAF audio file, leading to a heap-based buffer overflow.

Published: 2009-03-05 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0186 is rated High Risk (68.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.64%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-0186

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.23% 3.64% +0.41%
2 2026-04-25 4.23% 3.23% -1.00%
3 2025-05-18 — 4.23% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0186

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2009-0186

OS Trackers for CVE-2009-0186

vendor priority summary link
debian medium CVE-2009-0186 medium priority: Debian including 1 source packages (libsndfile), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-0186
gentoo normal CVE-2009-0186: 1 GLSA(s) (200904-16), 1 atom(s) (media-libs/libsndfile); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-0186
redhat high — https://access.redhat.com/security/cve/CVE-2009-0186
suse critical — https://www.suse.com/security/cve/CVE-2009-0186/
ubuntu medium CVE-2009-0186 medium priority: Ubuntu including 1 source packages (libsndfile), 5 status rows across 5 suites (dapper, gutsy, hardy, intrepid, upstream): released 5. https://ubuntu.com/security/CVE-2009-0186

Affected software / configurations for CVE-2009-0186

Vendor Product Version Raw CPE
nullsoft winamp 5.55 cpe:2.3:a:nullsoft:winamp:5.55:*:*:*:*:*:*:*
nullsoft winamp 5.541 cpe:2.3:a:nullsoft:winamp:5.541:*:*:*:*:*:*:*
mega-nerd libsndfile <= 1.0.18 cpe:2.3:a:mega-nerd:libsndfile:*:*:*:*:*:*:*:*
mega-nerd libsndfile 0.0.8 cpe:2.3:a:mega-nerd:libsndfile:0.0.8:*:*:*:*:*:*:*
mega-nerd libsndfile 0.0.28 cpe:2.3:a:mega-nerd:libsndfile:0.0.28:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.0 cpe:2.3:a:mega-nerd:libsndfile:1.0.0:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.0 cpe:2.3:a:mega-nerd:libsndfile:1.0.0:rc1:*:*:*:*:*:*
mega-nerd libsndfile 1.0.0 cpe:2.3:a:mega-nerd:libsndfile:1.0.0:rc6:*:*:*:*:*:*
mega-nerd libsndfile 1.0.1 cpe:2.3:a:mega-nerd:libsndfile:1.0.1:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.2 cpe:2.3:a:mega-nerd:libsndfile:1.0.2:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.3 cpe:2.3:a:mega-nerd:libsndfile:1.0.3:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.4 cpe:2.3:a:mega-nerd:libsndfile:1.0.4:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.5 cpe:2.3:a:mega-nerd:libsndfile:1.0.5:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.6 cpe:2.3:a:mega-nerd:libsndfile:1.0.6:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.7 cpe:2.3:a:mega-nerd:libsndfile:1.0.7:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.8 cpe:2.3:a:mega-nerd:libsndfile:1.0.8:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.9 cpe:2.3:a:mega-nerd:libsndfile:1.0.9:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.10 cpe:2.3:a:mega-nerd:libsndfile:1.0.10:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.11 cpe:2.3:a:mega-nerd:libsndfile:1.0.11:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.12 cpe:2.3:a:mega-nerd:libsndfile:1.0.12:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.13 cpe:2.3:a:mega-nerd:libsndfile:1.0.13:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.14 cpe:2.3:a:mega-nerd:libsndfile:1.0.14:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.15 cpe:2.3:a:mega-nerd:libsndfile:1.0.15:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.16 cpe:2.3:a:mega-nerd:libsndfile:1.0.16:*:*:*:*:*:*:*
mega-nerd libsndfile 1.0.17 cpe:2.3:a:mega-nerd:libsndfile:1.0.17:*:*:*:*:*:*:*

References for CVE-2009-0186

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
http://secunia.com/advisories/33980 Vendor Advisory
http://secunia.com/advisories/33981 Vendor Advisory
http://secunia.com/advisories/34316
http://secunia.com/advisories/34526
http://secunia.com/advisories/34642
http://secunia.com/advisories/34791
http://secunia.com/secunia_research/2009-7/ Vendor Advisory
http://secunia.com/secunia_research/2009-8/ Vendor Advisory
http://security.gentoo.org/glsa/glsa-200904-16.xml
http://www.debian.org/security/2009/dsa-1742
http://www.mega-nerd.com/libsndfile/NEWS
http://www.securityfocus.com/archive/1/501399/100/0/threaded
http://www.securityfocus.com/archive/1/501413/100/0/threaded
http://www.securityfocus.com/bid/33963
http://www.securitytracker.com/id?1021784
http://www.ubuntu.com/usn/USN-749-1
http://www.vupen.com/english/advisories/2009/0584 Vendor Advisory
http://www.vupen.com/english/advisories/2009/0585 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/49038
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