CVE-2009-4835

The (1) htk_read_header, (2) alaw_init, (3) ulaw_init, (4) pcm_init, (5) float32_init, and (6) sds_read_header functions in libsndfile 1.0.20 allow context-dependent attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted audio file.

Published: 2010-05-06 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4835 is rated Moderate Risk (42.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.44%). EPSS rose +1.07% over the last day, indicating growing attacker interest. Review affected assets and schedule 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-2009-4835

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 0.37% 1.44% +1.07%
2 2025-03-30 0.77% 0.37% -0.40%
3 2025-03-29 — 0.77% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4835

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2009-4835

OS Trackers for CVE-2009-4835

vendor priority summary link
debian unimportant CVE-2009-4835 unimportant 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-2009-4835
ubuntu negligible CVE-2009-4835 negligible priority: Ubuntu including 1 source packages (libsndfile), 8 status rows across 8 suites (dapper, hardy, jaunty, karmic, lucid, maverick, natty, upstream): ignored 4, not-affected 3, released 1. https://ubuntu.com/security/CVE-2009-4835

Vendor comments (NVD) for CVE-2009-4835

  • Red Hat (2010-05-06T00:00:00)

    Red Hat does not consider this issue to be a security flaw. The libsndfile library is not used outside of client applications, where crashes are not considered to be security flaws.

Affected software / configurations for CVE-2009-4835

Vendor Product Version Raw CPE
mega-nerd libsndfile 1.0.20 cpe:2.3:a:mega-nerd:libsndfile:1.0.20:*:*:*:*:*:*:*

References for CVE-2009-4835

cvelogic Threat Intelligence