Microsoft · Security update · August 14, 2018
KB4343888: August 2018 security update
KB4343888, released August 14, 2018, fixes 12 CVEs across 4 products. One of them is being exploited (CVE-2018-8405); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEVKnown ransomware use
CVEs closed
12
2 rated Critical
Exploited
1
CVE-2018-8405
Exploitation more likely
3
Microsoft's assessment
Highest EPSS
0.2340
97th percentile
Priority of the 12 CVEs
Patch now 1
Urgent 3
High 3
Routine 5
Applies to
| Product |
|---|
| Windows 8.1 for 32-bit systems |
| Windows 8.1 for x64-based systems |
| Windows Server 2012 R2 |
| Windows Server 2012 R2 (Server Core installation) |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2018-8405 | Microsoft Graphics Component | Elevation of Privilege | 7.0 | 0.0344 | KEVRansomwareExploited |
| Urgent | CVE-2018-8344 | Microsoft Graphics Component | Remote Code Execution | 7.8 | 0.2298 | More likely |
| Urgent | CVE-2018-8345 | Microsoft Windows | Remote Code Execution | 7.5 | 0.1490 | More likely |
| Urgent | CVE-2018-8404 | Windows Kernel | Elevation of Privilege | 7.0 | 0.0122 | More likely |
| High | CVE-2018-8349 | Windows COM | Remote Code Execution | 7.0 | 0.2340 | Exploitation Less Likely |
| High | CVE-2018-8343 | Windows NDIS | Elevation of Privilege | 7.0 | 0.0129 | Exploitation Less Likely |
| High | CVE-2018-8339 | Windows Installer | Elevation of Privilege | 7.4 | 0.0116 | Exploitation Less Likely |
| Routine | CVE-2018-8394 | Microsoft Graphics Component | Information Disclosure | 4.7 | 0.0851 | Exploitation Less Likely |
| Routine | CVE-2018-8398 | Microsoft Graphics Component | Information Disclosure | 4.7 | 0.0851 | Exploitation Less Likely |
| Routine | CVE-2018-8340 | Windows Authentication Methods | Security Feature Bypass | 6.5 | 0.0789 | Exploitation Less Likely |
| Routine | CVE-2018-8341 | Windows Kernel | Information Disclosure | 4.7 | 0.0285 | Exploitation Less Likely |
| Routine | CVE-2018-8348 | Windows Kernel | Information Disclosure | 4.7 | 0.0235 | Exploitation Less Likely |
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