CVE-2009-3476

Buffer overflow in OpenSAML before 1.1.3 as used in Internet2 Shibboleth Service Provider software 1.3.x before 1.3.4, and XMLTooling before 1.2.2 as used in Internet2 Shibboleth Service Provider software 2.x before 2.2.1, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a malformed encoded URL.

Published: 2009-09-29 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3476 is rated High Risk (66.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.75%). 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-2009-3476

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 2026-02-18 1.56% 1.75% +0.19%
2 2025-03-30 4.38% 1.56% -2.82%
3 2025-03-29 — 4.38% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3476

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-2009-3476

OS Trackers for CVE-2009-3476

vendor priority summary link
debian not yet assigned CVE-2009-3476 not yet assigned priority: Debian including 3 source packages (opensaml, shibboleth-sp, xmltooling), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 15. https://security-tracker.debian.org/tracker/CVE-2009-3476
ubuntu medium CVE-2009-3476 medium priority: Ubuntu including 3 source packages (opensaml, shibboleth-sp, xmltooling), 30 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): DNE 14, released 8, ignored 4, not-affected 4. https://ubuntu.com/security/CVE-2009-3476

Affected software / configurations for CVE-2009-3476

Vendor Product Version Raw CPE
internet2 shibboleth-sp 1.3.1 cpe:2.3:a:internet2:shibboleth-sp:1.3.1:*:*:*:*:*:*:*
internet2 shibboleth-sp 1.3.2 cpe:2.3:a:internet2:shibboleth-sp:1.3.2:*:*:*:*:*:*:*
internet2 shibboleth-sp 1.3.3 cpe:2.3:a:internet2:shibboleth-sp:1.3.3:*:*:*:*:*:*:*
internet2 shibboleth-sp 1.3f cpe:2.3:a:internet2:shibboleth-sp:1.3f:*:*:*:*:*:*:*
internet2 opensaml 1.1 cpe:2.3:a:internet2:opensaml:1.1:*:*:*:*:*:*:*
internet2 opensaml 1.1.1 cpe:2.3:a:internet2:opensaml:1.1.1:*:*:*:*:*:*:*
internet2 xmltooling 1.0.1 cpe:2.3:a:internet2:xmltooling:1.0.1:*:*:*:*:*:*:*
internet2 xmltooling 1.1.0 cpe:2.3:a:internet2:xmltooling:1.1.0:*:*:*:*:*:*:*
internet2 xmltooling 1.1.1 cpe:2.3:a:internet2:xmltooling:1.1.1:*:*:*:*:*:*:*
internet2 xmltooling 1.2.0 cpe:2.3:a:internet2:xmltooling:1.2.0:*:*:*:*:*:*:*
internet2 xmltooling 1.2.1 cpe:2.3:a:internet2:xmltooling:1.2.1:*:*:*:*:*:*:*
internet2 shibboleth-sp 2.0 cpe:2.3:a:internet2:shibboleth-sp:2.0:*:*:*:*:*:*:*
internet2 shibboleth-sp 2.1 cpe:2.3:a:internet2:shibboleth-sp:2.1:*:*:*:*:*:*:*
internet2 shibboleth-sp 2.2 cpe:2.3:a:internet2:shibboleth-sp:2.2:*:*:*:*:*:*:*

References for CVE-2009-3476

cvelogic Threat Intelligence