Zero-day vulnerability in Microsoft XML Core Services

Information disclosure

Microsoft and FireEye first discussed this issue in November, 2013.

Vulnerability details

Advisory: SB2014021101 - Information disclosure in Microsoft XML Core Services

Vulnerable component: Microsoft XML Core Services

CVE-ID: CVE-2014-0266

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

CWE-ID: CWE-284 - Improper Access Control


The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to improper enforcement of cross-domain policies. A remote attacker can create a specially crafted Web page, trick the victim into visiting it using Internet Explorer, bypass cross-domain security restrictions and read local files or content from web domains the victim is authenticated with.

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Note: the vulnerability was being actively exploited.