CVE-2010-1241 in Acrobat Reader
Summary
by MITRE
Heap-based buffer overflow in the custom heap management system in Adobe Reader and Acrobat 9.x before 9.3.2, and 8.x before 8.2.2 on Windows and Mac OS X, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted PDF document, aka FG-VD-10-005.
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Analysis
by VulDB Data Team • 05/05/2026
The vulnerability described in CVE-2010-1241 represents a critical heap-based buffer overflow within Adobe Reader and Acrobat's custom heap management system. This flaw exists in versions prior to 9.3.2 for 9.x series and 8.2.2 for 8.x series across both Windows and Mac OS X platforms. The vulnerability stems from improper memory management practices that fail to validate buffer boundaries during heap allocation operations. Attackers can exploit this weakness by crafting malicious PDF documents that trigger the buffer overflow when the vulnerable software attempts to process specially constructed heap management operations. The flaw specifically targets the custom heap implementation that Adobe uses to manage memory allocation for various PDF processing functions, creating a pathway for arbitrary code execution or system instability.
The technical exploitation of this vulnerability occurs through the manipulation of heap management structures within the PDF processing pipeline. When Adobe Reader or Acrobat encounters a crafted PDF document containing malicious heap management instructions, the custom heap allocator fails to properly validate the size or boundaries of memory allocations. This leads to memory corruption that can be leveraged to overwrite critical memory locations including return addresses, function pointers, or other control data structures. The heap-based nature of the vulnerability means that attackers can potentially control the execution flow of the application by carefully crafting the overflow to overwrite specific memory locations. The vulnerability is classified under CWE-121 as a heap-based buffer overflow, which is a well-documented weakness in memory management that has been exploited in numerous security incidents. This type of vulnerability falls squarely within the ATT&CK technique T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation.
The operational impact of CVE-2010-1241 extends beyond simple denial of service scenarios to encompass full system compromise capabilities. Remote attackers can execute arbitrary code with the privileges of the victim user, potentially leading to complete system compromise. The memory corruption effects can cause unpredictable behavior including application crashes, data corruption, or more sinisterly, the execution of malicious payload code that could establish persistent backdoors or exfiltrate sensitive data. Organizations using affected versions of Adobe Reader and Acrobat face significant risk exposure, particularly in environments where users frequently open PDF documents from untrusted sources. The vulnerability's remote exploitability means that attackers need only deliver a malicious PDF document via email, web download, or other delivery mechanisms to potentially compromise systems. This makes the vulnerability particularly dangerous in enterprise environments where PDF documents are commonly shared and opened by multiple users across different operating systems.
Mitigation strategies for CVE-2010-1241 primarily focus on immediate software updates and operational security measures. Adobe released patches for versions 9.3.2 and 8.2.2 that address the heap management overflow by implementing proper boundary checking and memory validation. Organizations should prioritize immediate deployment of these patches across all affected systems, as the vulnerability has been actively exploited in the wild. Additional mitigations include implementing PDF sandboxing features, disabling JavaScript execution in PDF documents, and employing content filtering solutions that can detect and block potentially malicious PDF content. Network-based protections such as web application firewalls and email security gateways can help prevent delivery of malicious PDF files to end users. Security monitoring should include detection of unusual heap allocation patterns and memory corruption events that might indicate exploitation attempts. The vulnerability also underscores the importance of regular security assessments and vulnerability management programs, as it demonstrates how custom memory management implementations can introduce unexpected security weaknesses that require careful validation and testing. Organizations should also consider implementing least privilege principles for PDF processing applications and regularly review their PDF handling policies to minimize exposure to such vulnerabilities.