CVE-2017-0263

Microsoft Win32k: Privilege Escalation

As of , CVE-2017-0263 in Microsoft Win32k is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 10 February 2022
US federal deadline
10 August 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.10Higher than 95% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.02 on 10 February 2022EPSS on the day CISA listed it.
Public exploit
1 Exploit-DB entry
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Microsoft Win32k contains a privilege escalation vulnerability due to the Windows kernel-mode driver failing to properly handle objects in memory.

CISA's description

The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

The CVE record's description, from microsoft

CVE published
12 May 2017
Assigned by
microsoft
CVSS
7.8 High (CVSS 3.1, from CISA-ADP)
CWE-416
Use After Free
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 44478).
  3. CISA added it to its list of exploited vulnerabilities.
  4. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Win32k: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2014-4113Privilege EscalationMicrosoft Win32kPatch this weekMetasploit module; EPSS 0.87; verified Exploit-DB entry0.87
CVE-2018-8120Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.73; verified Exploit-DB entry0.73
CVE-2015-1701Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.56; verified Exploit-DB entry0.56
CVE-2018-8453Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.70; verified Exploit-DB entry0.70
CVE-2013-3660Privilege EscalationMicrosoft Win32kPatch this weekMetasploit module; verified Exploit-DB entry0.39
CVE-2022-21882Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.590.59
CVE-2019-1458Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.740.74
CVE-2021-1732Privilege EscalationMicrosoft Win32kPatch this weekRansomware use; Metasploit module; EPSS 0.780.78
CVE-2019-0808Privilege EscalationMicrosoft Win32kPatch this weekMetasploit module; EPSS 0.530.53
CVE-2020-1054Privilege EscalationMicrosoft Win32kPatch this weekMetasploit module; EPSS 0.540.54

All 25 entries for Win32k

Read further