VulnerabilityAnalyzed
CVE-2015-1701
Microsoft Win32k Privilege Escalation Vulnerability
KEVHIGH 7.8EPSS 56.2%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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."
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 56.20% probability · 99th percentile
- CISA KEV
- Listed 3 March 2022 · due 24 March 2022 · used in ransomware campaigns
- Affected
- microsoft/windows 2003 server · microsoft/windows 7 · microsoft/windows server 2008 · microsoft/windows vista
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-1701
References
- http://seclists.org/fulldisclosure/2020/May/34Broken Link, Mailing List, Third Party Advisory
- http://twitter.com/symantec/statuses/590208710527549440Press/Media Coverage
- http://www.securityfocus.com/bid/74245Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1032155Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-051Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/37049/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/37367/Exploit, Third Party Advisory, VDB Entry
- https://www.fireeye.com/blog/threat-research/2015/04/probable_apt28_useo.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2020/May/34Broken Link, Mailing List, Third Party Advisory
- http://twitter.com/symantec/statuses/590208710527549440Press/Media Coverage
- http://www.securityfocus.com/bid/74245Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1032155Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-051Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/37049/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/37367/Exploit, Third Party Advisory, VDB Entry
- https://www.fireeye.com/blog/threat-research/2015/04/probable_apt28_useo.htmlThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1701US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.