CVE-2006-0511

Blackboard Academic Suite 6.0 and earlier does not properly clear session information when de-authenticating a user who is idle, which allows subsequent users to log in as the previous user and gain privileges. NOTE: the vendor has disputed this issue, saying that "This is a customer specific issue related to their Kerberos authentication single sign-on application and not a vulnerability in the Blackboard product.

Published: 2006-02-01 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-0511 is rated Low Risk (27.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.36%). 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-2006-0511

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 0.18% 0.36% +0.18%
2 2025-03-17 0.07% 0.18% +0.11%
3 2023-03-07 — 0.07% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-0511

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:L/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.1 6.4 [email protected]

Weakness enumeration for CVE-2006-0511

OS Trackers for CVE-2006-0511

vendor priority summary link
alpine — CVE-2006-0511: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-0511

Affected software / configurations for CVE-2006-0511

Vendor Product Version Raw CPE
blackboard blackboard 5.0 cpe:2.3:a:blackboard:blackboard:5.0:*:*:*:*:*:*:*
blackboard blackboard 5.0.2 cpe:2.3:a:blackboard:blackboard:5.0.2:*:*:*:*:*:*:*
blackboard blackboard 5.5 cpe:2.3:a:blackboard:blackboard:5.5:*:*:*:*:*:*:*
blackboard blackboard 5.5.1 cpe:2.3:a:blackboard:blackboard:5.5.1:*:*:*:*:*:*:*
blackboard blackboard 6.0 cpe:2.3:a:blackboard:blackboard:6.0:*:*:*:*:*:*:*
blackboard blackboard_academic_suite 6.0 cpe:2.3:a:blackboard:blackboard_academic_suite:6.0:*:*:*:*:*:*:*

References for CVE-2006-0511

cvelogic Threat Intelligence