Zero-day vulnerability in Microsoft Excel

Remote code execution

Known malware:

Mdropper.J Trojan.

Vulnerability details

Advisory: SB2006071101 - Multiple vulnerabilities in Microsoft Excel

Vulnerable component: Microsoft Excel

CVE-ID: CVE-2006-3059

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-119 - Memory corruption


The vulnerability allows a remote user to execute arbitrary code on the target system.

The weakness is due to a stack-based buffer overflow in the HrShellOpenWithMonikerDisplayName() function. By persuading the victim to open a specially crafted Excel file, a remote attacker can cause DoS conditions or execute arbitrary code via a long hyperlink.

Successful exploitation of the vulnerability results in denial of service or arbitrary code execution on the vulnerable system.

Note: this vulnerability was being actively exploited.

Public Exploits: