Microsoft · Win32k
CVE-2015-1701
Microsoft Win32k Privilege Escalation Vulnerability
What it is
Win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 allows local users to gain privileges via a crafted application, as exploited in the wild in April 2015, aka "Win32k Elevation of Privilege Vulnerability."
CISA: An unspecified vulnerability exists in the Win32k.sys kernel-mode driver in Microsoft Windows Server that allows a local attacker to execute arbitrary code with elevated privileges.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: March 24, 2022
- Added to the CISA list
- March 3, 2022
- Published
- April 21, 2015
- Severity
- High 7.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 56% in the top 1.0% of all known vulnerabilities
- Weakness
- CWE-264
- More details
- NVD · CVE.org · CISA
All references (8)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-051
- http://twitter.com/symantec/statuses/590208710527549440
- https://www.exploit-db.com/exploits/37049/
- http://www.securityfocus.com/bid/74245
- https://www.exploit-db.com/exploits/37367/
- https://www.fireeye.com/blog/threat-research/2015/04/probable_apt28_useo.html
- http://www.securitytracker.com/id/1032155
- http://seclists.org/fulldisclosure/2020/May/34
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Jun 22, 2023 | Privilege Escalation | Win32k | High 7.8 | 14% |
| May 9, 2023 | Privilege Escalation | Win32k | High 7.8 | 41% |
| May 25, 2022 | Privilege Escalation | Win32k | High 8.8 | 15% |
| May 23, 2022 | Privilege Escalation | Win32k | High 7.8 | 3.0% |
| May 4, 2022 | Privilege Escalation | Win32k | High 7.8 | 87% |
| Apr 25, 2022 | Privilege Escalation | Win32k | High 7.8 | 1.6% |
| Apr 25, 2022 | Privilege Escalation | Win32k | High 7.8 | 1.6% |
| Mar 28, 2022 | Privilege Escalation | Win32k | High 7.8 | 39% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.