CVE-2011-0651

Buffer overflow in the key exchange functionality in Icon Labs Iconfidant SSL Server before 1.3.0 allows remote attackers to execute arbitrary code via a client master key packet in which the sum of unspecified length fields is greater than a certain value.

Published: 2011-01-28 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-0651 is rated Moderate Risk (56.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.77%). 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-2011-0651

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 2026-03-02 13.83% 4.77% -9.06%
2 2025-03-30 8.63% 13.83% +5.20%
3 2025-03-29 — 8.63% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-0651

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-2011-0651

Affected software / configurations for CVE-2011-0651

Vendor Product Version Raw CPE
icon-labs iconfidant_ssl_server <= 1.2.9 cpe:2.3:a:icon-labs:iconfidant_ssl_server:*:*:*:*:*:*:*:*

References for CVE-2011-0651

cvelogic Threat Intelligence