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How the CVE Works
CVE-2025-48805 is a heap-based buffer overflow vulnerability in Microsoft’s MPEG-2 Video Extension. The flaw occurs when processing specially crafted MPEG-2 video files, leading to improper memory allocation. An attacker can exploit this by tricking a user into opening a malicious file, causing data to overflow into adjacent heap memory. This allows arbitrary code execution in the context of the current user, potentially leading to full system compromise if combined with privilege escalation techniques. The exploit leverages improper bounds checking during video stream decoding, corrupting heap structures and hijacking control flow.
DailyCVE Form
Platform: Windows
Version: MPEG-2 Video Extension
Vulnerability: Heap overflow
Severity: Critical
Date: 07/15/2025
Prediction: Patch by 08/10/2025
What Undercode Say
Analytics:
windbg !heap -p -a
<
address>
procmon.exe filter "Path contains .mpg"
python3 -c "print('A' 5000)" > exploit.mpg
How Exploit:
- Craft malicious MPEG-2 file
- Trigger overflow via playback
- Overwrite heap metadata
- Execute shellcode
Protection from this CVE:
- Disable extension
- Apply patch
- Restrict file access
Impact:
- Local code execution
- Privilege escalation
- System compromise
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
