CVE-2009-4527

The Shibboleth authentication module 5.x before 5.x-3.4 and 6.x before 6.x-3.2, a module for Drupal, does not properly remove statically granted privileges after a logout or other session change, which allows physically proximate attackers to gain privileges by using an unattended web browser.

Published: 2009-12-31 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4527 is rated Low Risk (26.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2009-4527

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 2023-03-07 0.95% 0.06% -0.89%
2 2022-02-04 — 0.95% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4527

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2009-4527

Affected software / configurations for CVE-2009-4527

Vendor Product Version Raw CPE
niif shib_auth 5.x-1.x cpe:2.3:a:niif:shib_auth:5.x-1.x:dev:*:*:*:*:*:*
niif shib_auth 5.x-2.1 cpe:2.3:a:niif:shib_auth:5.x-2.1:*:*:*:*:*:*:*
niif shib_auth 5.x-2.2 cpe:2.3:a:niif:shib_auth:5.x-2.2:*:*:*:*:*:*:*
niif shib_auth 5.x-2.4 cpe:2.3:a:niif:shib_auth:5.x-2.4:*:*:*:*:*:*:*
niif shib_auth 5.x-2.5 cpe:2.3:a:niif:shib_auth:5.x-2.5:*:*:*:*:*:*:*
niif shib_auth 5.x-2.x cpe:2.3:a:niif:shib_auth:5.x-2.x:dev:*:*:*:*:*:*
niif shib_auth 5.x-3.3 cpe:2.3:a:niif:shib_auth:5.x-3.3:*:*:*:*:*:*:*
niif shib_auth 5.x-3.x cpe:2.3:a:niif:shib_auth:5.x-3.x:dev:*:*:*:*:*:*
niif shib_auth 6.x-1.x cpe:2.3:a:niif:shib_auth:6.x-1.x:dev:*:*:*:*:*:*
niif shib_auth 6.x-2.0 cpe:2.3:a:niif:shib_auth:6.x-2.0:*:*:*:*:*:*:*
niif shib_auth 6.x-2.1 cpe:2.3:a:niif:shib_auth:6.x-2.1:*:*:*:*:*:*:*
niif shib_auth 6.x-2.2 cpe:2.3:a:niif:shib_auth:6.x-2.2:*:*:*:*:*:*:*
niif shib_auth 6.x-2.x cpe:2.3:a:niif:shib_auth:6.x-2.x:dev:*:*:*:*:*:*
niif shib_auth 6.x-3.0 cpe:2.3:a:niif:shib_auth:6.x-3.0:*:*:*:*:*:*:*
niif shib_auth 6.x-3.0 cpe:2.3:a:niif:shib_auth:6.x-3.0:1:*:*:*:*:*:*
niif shib_auth 6.x-3.1 cpe:2.3:a:niif:shib_auth:6.x-3.1:*:*:*:*:*:*:*
niif shib_auth 6.x-3.x cpe:2.3:a:niif:shib_auth:6.x-3.x:dev:*:*:*:*:*:*

References for CVE-2009-4527

cvelogic Threat Intelligence