CVE-2012-1256

The single sign-on (SSO) implementation in EasyVista before 2010.1.1.89 allows remote attackers to bypass authentication via a modified url_account parameter, in conjunction with a valid login name in the SSPI_HEADER parameter, to index.php.

Published: 2012-02-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-1256 is rated Moderate Risk (46.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.51%). EPSS rose +1.29% 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-2012-1256

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 0.22% 1.51% +1.29%
2 2025-09-17 0.39% 0.22% -0.17%
3 2025-03-17 — 0.39% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-1256

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N 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:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2012-1256

Affected software / configurations for CVE-2012-1256

Vendor Product Version Raw CPE
easyvista easyvista <= 2010 cpe:2.3:a:easyvista:easyvista:*:*:*:*:*:*:*:*

References for CVE-2012-1256

cvelogic Threat Intelligence