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Information disclosure in Microsoft XML Core Services

Published: 2014-02-11 | Updated: 2017-03-11
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2014-0266
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Microsoft XML Core Services
Client/Desktop applications / Other client software

Vendor Microsoft

Security Advisory

This security advisory describes one high risk vulnerability.

1) Information disclosure

Severity: High

CVSSv3: 6.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2014-0266

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes [Search exploit]


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.


Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8, Vista, XP

Windows Server: 2003, 2008, 2012

Microsoft XML Core Services: 3.0

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.