vulnwire
7.8high

CVE-2016-7255KEV · ransomwarein critical feed3 exploits

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012…

Published 9 y ago · modified 58 d ago · JSON

CVSS
7.8
v3.1 · CNA
CISA KEV
Yes
added 2021-11-03
EPSS
81.0%
percentile 100%
Public exploits
3
Exploit-DB

The kernel-mode drivers in Microsoft Windows Vista SP2, 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, and 1607, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

Known exploited (CISA KEV)

Added
5 y ago
Due date
2022-05-03 (4 y ago)
Ransomware use
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor / product
Microsoft / Win32k
CISA name
Microsoft Win32k Privilege Escalation Vulnerability

CISA SSVC assessment

Exploitation
Active — exploited in the wild
Automatable
no
Technical impact
total
Assessed
5 y ago

Exploit prediction (EPSS)

80.97% probability of exploitation in the next 30 days, higher than 100% of all scored CVEs.

Exploits and detections

  • EDB-41015 Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (2) · local · 2017-01-08
  • EDB-40823 Microsoft Windows Kernel - 'win32k.sys NtSetWindowLongPtr' Local Privilege Escalation (MS16-135) (1) · local · 2016-11-24
  • EDB-40745 Microsoft Windows Kernel - 'win32k' Denial of Service (MS16-135) · dos · 2016-11-09

CVSS scores

Assigned byVersionScoreVector
CISA ADP3.17.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD3.17.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA3.17.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

References

  • packetstormsecurity.com /files/140468/Microsoft-Windows-Kernel-win32k.sys-NtSetWindowLongPtr-Privilege-Escalation. · x_refsource_MISC, x_transferred
  • github.com /mwrlabs/CVE-2016-7255 · x_refsource_MISC, x_transferred
  • exploit-db.com /exploits/40823/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • exploit-db.com /exploits/41015/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • securingtomorrow.mcafee.com /mcafee-labs/digging-windows-kernel-privilege-escalation-vulnerability-cve-2016-7255/ · x_refsource_MISC, x_transferred
  • exploit-db.com /exploits/40745/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • securitytracker.com /id/1037251 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • docs.microsoft.com /en-us/security-updates/securitybulletins/2016/ms16-135 · vendor-advisory, x_refsource_MS, x_transferred
  • blog.trendmicro.com /trendlabs-security-intelligence/one-bit-rule-system-analyzing-cve-2016-7255-exploit-wild/ · x_refsource_MISC, x_transferred
  • securityfocus.com /bid/94064 · vdb-entry, x_refsource_BID, x_transferred
  • security.googleblog.com /2016/10/disclosing-vulnerabilities-to-protect.html · x_refsource_MISC, x_transferred
  • cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7255 · government-resource

Sources

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