CVE-2011-2462 in Acrobat Reader
Summary
by MITRE
Unspecified vulnerability in the U3D component in Adobe Reader and Acrobat 10.1.1 and earlier on Windows and Mac OS X, and Adobe Reader 9.x through 9.4.6 on UNIX, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via unknown vectors, as exploited in the wild in December 2011.
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Analysis
by VulDB Data Team • 04/22/2026
The vulnerability identified as CVE-2011-2462 represents a critical security flaw within Adobe Reader and Acrobat's Universal 3D (U3D) component that affected multiple platform versions from 2011. This vulnerability was particularly concerning as it was actively exploited in the wild during December 2011, demonstrating the real-world threat posed by such flaws in widely deployed software applications. The U3D component is responsible for rendering 3D content within PDF documents, making it a legitimate feature that users expected to function properly while simultaneously creating a potential attack surface that malicious actors could leverage for exploitation.
The technical nature of this vulnerability manifests as unspecified memory corruption issues within the U3D parsing functionality of Adobe's PDF viewing software. Memory corruption vulnerabilities typically occur when software fails to properly validate or handle memory operations during processing of malformed input data, leading to unpredictable behavior that can be exploited to execute arbitrary code or cause system instability. The vulnerability specifically affects the U3D component which processes 3D graphics data embedded within PDF documents, suggesting that the flaw occurs during the parsing or rendering of 3D content structures. This type of vulnerability falls under the CWE-125 weakness category, which describes "Out-of-bounds Read" conditions, or potentially CWE-787 "Out-of-bounds Write" depending on the exact memory corruption mechanism.
The operational impact of CVE-2011-2462 extends beyond simple exploitation capabilities to encompass significant security risks for organizations and individual users. When exploited successfully, this vulnerability could enable attackers to execute arbitrary code with the privileges of the victim's current session, potentially leading to full system compromise. The memory corruption nature of the vulnerability also means that it could be leveraged for denial of service attacks, where systems might crash or become unresponsive when processing maliciously crafted PDF documents containing U3D content. Given that Adobe Reader was widely deployed across enterprise environments and individual workstations, the potential attack surface was extensive, with each compromised system representing a possible entry point for further network infiltration.
From an adversarial perspective, this vulnerability aligns with the ATT&CK framework's technique T1203 "Exploitation for Client Execution" which describes how attackers use software vulnerabilities to execute malicious code on target systems. The exploitation methods likely involved crafting specially formatted PDF documents containing malicious U3D content that would trigger the memory corruption when processed by Adobe Reader. Organizations implementing defensive measures needed to consider both immediate patching strategies and broader network security controls. The vulnerability's exploitation in December 2011 coincided with a period when zero-day exploits were particularly prevalent, highlighting the importance of maintaining up-to-date security patches and implementing security awareness training to prevent users from inadvertently opening malicious documents. Mitigation strategies included disabling U3D content processing within Adobe Reader, applying the vendor-provided security patches, and implementing network-based controls to filter potentially malicious PDF content before it reached end-user systems. The incident underscored the critical nature of third-party software security and the importance of maintaining comprehensive vulnerability management processes across all software components within an organization's IT infrastructure.