CVE-2010-0188

What is Adobe Reader and Acrobat?

Adobe Acrobat and Adobe Reader are the dominant applications for creating and viewing PDF files. By 2010, Adobe Reader was installed on virtually every Windows, Mac, and Linux desktop. Reader's broad deployment, combined with its support for JavaScript, rich media, and complex document formats, made it a primary attack vector for malware delivery throughout the late 2000s and early 2010s. The February 2010 Adobe Security Bulletin APSB10-07 addressed multiple critical vulnerabilities discovered in rapid succession as security researchers intensively audited Reader's codebase following the high-profile zero-days of 2009.

Overview

CVE-2010-0188 is a high-severity unspecified vulnerability (CVSS 7.8) in Adobe Reader and Acrobat, patched in the February 2010 out-of-band security bulletin APSB10-07. The NVD description is intentionally vague — "unspecified vulnerability... allows attackers to cause a denial of service or possibly execute arbitrary code" — a characterization Adobe used when full technical details were not publicly disclosed. The ransomwareUse: true designation reflects documented use in ransomware delivery chains targeting organizations with unpatched Reader installations. CISA added to KEV in March 2022.

Affected Versions

Note: All Adobe Reader and Acrobat versions prior to version 11 are end-of-life and no longer receive security updates.

Technical Details

The CVSS metrics for CVE-2010-0188 reflect an unusual exploitation scenario for a Reader vulnerability. The Local attack vector (AV:L) with Low Privilege Required (PR:L) and no User Interaction (UI:N) indicates that exploitation requires a low-privileged local user or process rather than the standard network delivery (malicious PDF opened from email or web). This profile suggests a vulnerability in Reader's file handling or processing pipeline that can be triggered without the typical "open a malicious PDF" social engineering step — possibly a vulnerability in how Reader processes files it has previously accessed, or a privilege escalation within the Reader application itself.

The February 2010 APSB10-07 addressed multiple critical vulnerabilities simultaneously, reflecting that Adobe Reader was under sustained adversarial and security research scrutiny following the December 2009 newplayer() zero-day. The ransomwareUse: true flag indicates this vulnerability was incorporated into ransomware delivery chains, consistent with the broader pattern of using Reader as a first-stage exploit for dropping ransomware payloads.

Discovery

Identified through security research and vulnerability analysis of Adobe Reader's internal components. Adobe released APSB10-07 as an out-of-band emergency patch (released February 16, 2010 — outside the regular quarterly patch cycle), reflecting the severity and confirmed exploitation of the vulnerabilities addressed.

Exploitation Context

Adobe Reader vulnerabilities in this period were a primary vector for ransomware and espionage campaigns:

• Ransomware delivery: Malicious PDF files delivered as email attachments or via drive-by downloads served as first-stage exploits to install ransomware. The ransomwareUse: true flag reflects this documented use pattern.
• Criminal exploit infrastructure: Exploit kits (Eleonore, BlackHole, etc.) routinely included the latest Adobe Reader exploits; a vulnerable Reader installation encountering any of hundreds of compromised websites could be silently exploited.
• Persistent targeting: Reader vulnerabilities from 2009–2010 continued to be exploited well into the 2010s as organizations ran legacy Reader versions on isolated or unmanaged systems.

Remediation

1. Apply APSB10-07: Upgrade to Adobe Reader/Acrobat 9.3.1 or 8.2.1 per the security bulletin.
2. Upgrade to current Adobe Reader: All Reader 8.x and 9.x versions are end-of-life. Install Adobe Acrobat Reader DC.
3. Disable JavaScript in Reader: Edit > Preferences > JavaScript — uncheck "Enable Acrobat JavaScript" to block the largest class of Reader exploits.
4. Remove the browser plugin: Disable the Acrobat/Reader browser plugin to prevent drive-by PDF exploitation.
5. Use browser-native PDF rendering: Chrome, Firefox, and Edge include built-in PDF viewers that don't use Adobe code.