Vulnerability identifier: #VU21649
Vulnerability risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Microsoft Excel
Client/Desktop applications /
Office applications
Microsoft Office for Mac
Client/Desktop applications /
Office applications
Microsoft Office
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 insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Excel software.
Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Excel.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Microsoft Excel:
Microsoft Office for Mac: 2016
Microsoft Office: 2019 - 2019 for Mac, 365 ProPlus
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1327
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.