CVE-2005-2963

The mod_auth_shadow module 1.0 through 1.5 and 2.0 for Apache with AuthShadow enabled uses shadow authentication for all locations that use the require group directive, even when other authentication mechanisms are specified, which might allow remote authenticated users to bypass security restrictions.

Published: 2005-10-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-2963 is rated Moderate Risk (59.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.44%). 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-2005-2963

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 1.49% 2.44% +0.96%
2 2025-03-30 1.96% 1.49% -0.47%
3 2025-03-29 — 1.96% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-2963

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2005-2963

OS Trackers for CVE-2005-2963

vendor priority summary link
ubuntu medium CVE-2005-2963 medium priority: Ubuntu including 1 source packages (mod-auth-shadow), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-2963

Affected software / configurations for CVE-2005-2963

Vendor Product Version Raw CPE
mod_auth_shadow mod_auth_shadow 1.0 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.0:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 1.1 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.1:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 1.2 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.2:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 1.3 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.3:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 1.4 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.4:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 1.5 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:1.5:*:*:*:*:*:*:*
mod_auth_shadow mod_auth_shadow 2.0 cpe:2.3:a:mod_auth_shadow:mod_auth_shadow:2.0:*:*:*:*:*:*:*

References for CVE-2005-2963

cvelogic Threat Intelligence