CVE-2009-3956: Critical – The default configuration of Adobe Reader and Acrobat 9.x before 9.3

CWE Weakness Definitions

CWE-16: CWE-16

◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 2010. A critical vulnerability affects Adobe systems (CVE-2009-3956). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2010-GLOBAL-325034-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions

What is CVE-2009-3956?

This vulnerability was disclosed in 2010. A critical vulnerability affects Adobe systems (CVE-2009-3956). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

What is the CVSS score for CVE-2009-3956?

CVE-2009-3956 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 7.7%.

Is CVE-2009-3956 actively exploited?

No confirmed active exploitation of CVE-2009-3956 as of 2026-05-30.

How do I remediate CVE-2009-3956?

Priority: MEDIUM. Advisory: http://www.adobe.com/support/security/bulletins/apsb10-02.html PSIRT: [email protected]

What systems are affected by CVE-2009-3956?

CVE-2009-3956 affects: Adobe, Adobe, Apple, Microsoft, Unix.

Vulnerability Details

CVE ID	`CVE-2009-3956`
BSID	`BS-2010-GLOBAL-325034-C` BreachSpider Global ID
CVSS Vector	`AV:N/AC:L/Au:N/C:C/I:C/A:C`
Published	2010-01-13
Last Modified	2026-04-23
ICS Relevance	0%
Weakness (CWE)	CWE-16
Source	NVD

Official Description

The default configuration of Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, does not enable the Enhanced Security feature, which has unspecified impact and attack vectors, related to a "script injection vulnerability," as demonstrated by Acrobat Forms Data Format (FDF) behavior that allows cross-site scripting (XSS) by user-assisted remote attackers.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: The default configuration of Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, does not enable the Enhanced Security feature, which has unspecified impact and attack vectors, related to a "script injection vulnerability," as demonstrated by Acrobat Forms Data Format (FDF) behavior that allows cross-site scripting (XSS) by user-assisted remote attackers. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products

Vendor	Product	Fixed Version
Adobe	Acrobat Reader	—
Adobe	Acrobat	—
Apple	Mac Os X	—
Microsoft	Windows	—
Unix	Unix	—

Remediation

View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]

Threat Intelligence

● Threat Intelligence Validated: August 2026 | Threat Age: 6048 Days

CISA KEV	Not in KEV catalog
Public Exploit	Not confirmed
PoC Code	Not confirmed

SAGE Enrichment Record — provenance & audit hash

Model	`rule-based-v1`
Confidence	MEDIUM
Enriched At	2026-05-24
SHA-512 Audit Hash	`5243c5a21cd0f7f98655bcf3997c3856dceb8592b8120f706a500cfccac687d9b7aaad2323dc78857f9313dac88f4b38802963c2039910a2d43a4fa45e58e4a3`

Related CVEs affecting Adobe

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