CVE-2009-3958

CRITICAL ⚠ Exploit

Multiple stack-based buffer overflows in the NOS Microsystems getPlus Helper ActiveX control before 1.6.2.49 in gp.ocx in the Download Manager in Adobe Reader and Acrobat 9.x before 9.3, and 8.x be...

Affects 5 products across 4 vendors.

BCS8.97
CVSS 2.010.0
EPSS52.6%
Percentile99th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-119: Improper Restriction of Operations within Memory Buffer

Parent class for buffer-related vulnerabilities where operations exceed buffer boundaries.

Related Attack Patterns (CAPEC)
CAPEC-8 Buffer Overflow in an API Call
via CWE-119
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-119
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-119
CAPEC-14 Client-side Injection-induced Buffer Overflow
via CWE-119
CAPEC-24 Filter Failure through Buffer Overflow
via CWE-119
Show all 12

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

Multiple stack-based buffer overflows in the NOS Microsystems getPlus Helper ActiveX control before version 1.6.2.49 in gp.ocx can be exploited by remote attackers to execute arbitrary code via unspecified initialization parameters in Adobe Reader and Acrobat 9.x before 9.3 and 8.x before 8.2 on Windows and Mac OS X.

BSID: BS-2010-GLOBAL-257273-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2009-3958?
Multiple stack-based buffer overflows in the NOS Microsystems getPlus Helper ActiveX control before version 1.6.2.49 in gp.ocx can be exploited by remote attackers to execute arbitrary code via unspecified initialization parameters in Adobe Reader and Acrobat 9.x before 9.3 and 8.x before 8.2 on Windows and Mac OS X.
What is the CVSS score for CVE-2009-3958?
CVE-2009-3958 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 52.6%.
Is CVE-2009-3958 actively exploited?
Public exploit available for CVE-2009-3958. Exploitation risk elevated.
How do I remediate CVE-2009-3958?
Priority: IMMEDIATE. Advisory: http://www.adobe.com/support/security/bulletins/apsb10-02.html PSIRT: [email protected]
What systems are affected by CVE-2009-3958?
CVE-2009-3958 affects: Adobe, Adobe, Apple, Microsoft, Unix.
Vulnerability Details
CVE IDCVE-2009-3958
BSIDBS-2010-GLOBAL-257273-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2010-01-13
Last Modified2026-06-16
ICS Relevance15%
Weakness (CWE)
Improper Restriction of Operations within Memory Buffer
SourceNVD
Official Description

Multiple stack-based buffer overflows in the NOS Microsystems getPlus Helper ActiveX control before 1.6.2.49 in gp.ocx in the Download Manager in Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, might allow remote attackers to execute arbitrary code via unspecified initialization parameters.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability exists in the Download Manager component of Adobe Reader and Acrobat, which utilizes the NOS Microsystems getPlus Helper ActiveX control. Attackers can exploit this by crafting malicious initialization parameters that trigger buffer overflows, potentially leading to arbitrary code execution.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductFixed Version
Adobe Acrobat Reader —
Adobe Acrobat —
Apple Mac Os X —
Microsoft Windows —
Unix Unix —
Remediation
View Vendor Advisory →

Remediation Priority: IMMEDIATE

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: September 2026 | Threat Age: 6101 Days
CISA KEVNot in KEV catalog
Public Exploit⚠ Available — Reference
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
Related CVEs affecting Adobe
CVE-2012-5263 10.0 Adobe Flash Player before 10.3.183.29 and 11.x before 11.4.402.287 on Windows... CVE-2013-2728 10.0 Adobe Flash Player before 10.3.183.86 and 11.x before 11.7.700.202 on Windows... CVE-2013-3339 10.0 Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x befor... CVE-2013-3356 10.0 Buffer overflow in Adobe Reader and Acrobat before 10.1.8 and 11.x before 11.... CVE-2014-0515 10.0 Buffer overflow in Adobe Flash Player before 11.7.700.279 and 11.8.x through ...
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