CVE-2014-2956

ScriptHelperApi in the AVG ScriptHelper ActiveX control in ScriptHelper.exe in AVG Secure Search toolbar before 18.1.7.598 and AVG Safeguard before 18.1.7.644 does not implement domain-based access control for method calls, which allows remote attackers to trigger the downloading and execution of arbitrary programs via a crafted web site.

Published: 2014-07-08 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-2956 is rated Moderate Risk (64.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.37%). 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-2014-2956

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 2025-07-27 1.75% 1.37% -0.37%
2 2025-03-30 1.86% 1.75% -0.12%
3 2025-03-29 — 1.86% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-2956

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2014-2956

NVD evaluator notes for CVE-2014-2956

Comment: Per: http://www.kb.cert.org/vuls/id/960193 "This issue is addressed in AVG Secure Search toolbar version 18.1.7.598 and AVG Safeguard 18.1.7.644"

Affected software / configurations for CVE-2014-2956

Vendor Product Version Raw CPE
avg safeguard <= 18.1.7 cpe:2.3:a:avg:safeguard:*:*:*:*:*:*:*:*
avg secure_search_toolbar <= 18.1.7 cpe:2.3:a:avg:secure_search_toolbar:*:*:*:*:*:*:*:*

References for CVE-2014-2956

URL Tags
http://www.kb.cert.org/vuls/id/960193 US Government Resource
cvelogic Threat Intelligence