CVE-2016-3309 kev+ ransomware in the critical feed json
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 2016-08-09 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-4341
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-03-15, used in ransomware
- epss
- 20.5%
- EPSS 20.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
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; and Windows 10 Gold, 1511, and 1607 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3308, CVE-2016-3310, and CVE-2016-3311.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- First public exploit (EDB-42960)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-04-05 (4 y ago)
- Ransomware
- Known to be used in ransomware campaigns
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows Kernel Privilege Escalation Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
20.47% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-42960 Microsoft Windows 10 RS2 (x64) - 'win32kfull!bFill' Pool Overflow local, 2017-10-06
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2016/ms16-098
vendor-advisory, patch
-
exploit-db.com
/exploits/42960/
exploit, broken-link, third-party-advisory, vdb-entry
-
securitytracker.com
/id/1036572
vdb-entry, broken-link, third-party-advisory
-
securityfocus.com
/bid/92297
vdb-entry, broken-link, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-3309
government-resource, us-government-resource
Sources
- CVE List CVE-2016-3309
- NVD CVE-2016-3309
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.