CVE-2011-1905

Multiple cross-site request forgery (CSRF) vulnerabilities in unspecified administrative modules in Proofpoint Messaging Security Gateway 6.2.0.263:6.2.0.237 and earlier in Proofpoint Protection Server 5.5.3, 5.5.4, 5.5.5, 6.0.2, 6.1.1, and 6.2.0 allow remote attackers to hijack the authentication of administrators via unknown vectors.

Published: 2011-05-05 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1905 is rated Moderate Risk (42.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.21%). 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-2011-1905

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 2025-09-13 0.08% 0.21% +0.13%
2 2025-03-17 0.15% 0.08% -0.07%
3 2024-09-17 — 0.15% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1905

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2011-1905

Affected software / configurations for CVE-2011-1905

Vendor Product Version Raw CPE
proofpoint messaging_security_gateway <= 6.2.0.263\:6.2.0.237 cpe:2.3:a:proofpoint:messaging_security_gateway:*:*:*:*:*:*:*:*
proofpoint protection_server 5.5.3 cpe:2.3:a:proofpoint:protection_server:5.5.3:*:*:*:*:*:*:*
proofpoint protection_server 5.5.4 cpe:2.3:a:proofpoint:protection_server:5.5.4:*:*:*:*:*:*:*
proofpoint protection_server 5.5.5 cpe:2.3:a:proofpoint:protection_server:5.5.5:*:*:*:*:*:*:*
proofpoint protection_server 6.0.2 cpe:2.3:a:proofpoint:protection_server:6.0.2:*:*:*:*:*:*:*
proofpoint protection_server 6.1.1 cpe:2.3:a:proofpoint:protection_server:6.1.1:*:*:*:*:*:*:*
proofpoint protection_server 6.2.0 cpe:2.3:a:proofpoint:protection_server:6.2.0:*:*:*:*:*:*:*

References for CVE-2011-1905

cvelogic Threat Intelligence