Zero-day vulnerability in Microsoft Office

Memory corruption

Used in Pawn Storm campaign, attacks against government agencies in Taiwan.

Known malware:

Trojans like Dridex or Dyreza and ransomware like cryptolocker or Teslacrypt.

Vulnerability details

Advisory: SB2014032401 - Multiple vulnerabilities in Microsoft Word and Office Web Apps

Vulnerable component: Microsoft Office

CVE-ID: CVE-2014-1761

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

CWE-ID: CWE-119 - Memory corruption


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

The weakness exists due to boundary error when handling RTF-formatted data. A remote attacker can create a specially crafted RTF file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Note: the vulnerability was being actively exploited.

Public Exploits: