Vulnerability identifier: #VU9913

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0796

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Excel
Client/Desktop applications / Office applications

Vendor: Microsoft

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

The vulnerability exists due to a boundary error when processing Microsoft Excel documents. A remote attacker can create a specially crafted Excel document, trick the victim into opening it and execute arbitrary code on the target system with privileges of the current user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2007, 2010, 2013 - 2013 RT

Microsoft Excel:

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0796

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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.