| Severity | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE ID | CVE-2014-4148 |
| CVSSv3 |
8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] |
| CWE ID |
CWE-20 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software |
Windows Server Windows |
| Vulnerable software versions |
Windows Server 2003 Windows Server 2008 R2 Windows Server 2008 Windows Server 2012 R2 Windows Server 2012 Windows RT 8.1 Windows RT Windows 8 Show more |
| Vendor URL | Microsoft |
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to improper input validation when processing TrueType fonts in kernel-mode driver (win32k.sys). A remote attacker can create a specially crafted font file, place it on a web page, trick the victim into visiting 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.
Install update from vendor's website.
https://technet.microsoft.com/en-us/library/security/ms14-058