Microsoft Monthly Security Update (July 2021)
RISK: Extremely High Risk
TYPE: Operating Systems - Windows OS

Microsoft has released monthly security update for their products:
| Vulnerable Product | Risk Level | Impacts | Notes |
| Windows | Extremely High Risk | Denial of Service Remote Code Execution Elevation of Privilege Security Restriction Bypass Information Disclosure Spoofing | Exploit in the wild |
| Extended Security Updates (ESU) | Extremely High Risk | Denial of Service Security Restriction Bypass Spoofing Remote Code Execution Information Disclosure Elevation of Privilege | Exploit in the wild |
| Exchange Server | High Risk | Remote Code Execution Elevation of Privilege Information Disclosure | [Updated 11-August-2021] ProxyShell vulnerabilities for CVE-2021-34473 (patch released in July), CVE-2021-34523 (patch released in July) and CVE-2021-31207 (patch released in May) are being actively scanned by threat actors |
| SQL Server | Medium Risk | Remote Code Execution | |
| Apps | Low Risk | Spoofing | |
| Developer Tools | Medium Risk | Elevation of Privilege Remote Code Execution Spoofing | |
| Microsoft Office | Medium Risk | Remote Code Execution Information Disclosure Security Restriction Bypass Spoofing | |
| Microsoft Dynamics | Medium Risk | Remote Code Execution | |
| System Center | Medium Risk | Remote Code Execution |
Number of 'Extremely High Risk' product(s): 2
Number of 'High Risk' product(s): 1
Number of 'Medium Risk' product(s): 5
Number of 'Low Risk' product(s): 1
Evaluation of overall 'Risk Level': Extremely High Risk
[Updated 11-August-2021] ProxyShell vulnerabilities for CVE-2021-34473 (patch released in July), CVE-2021-34523 (patch released in July) and CVE-2021-31207 (patch released in May) are being actively scanned by threat actors. Risk level of Exchange Server has been escalated to high risk.
Impact
- Denial of Service
- Elevation of Privilege
- Remote Code Execution
- Security Restriction Bypass
- Information Disclosure
- Spoofing
System / Technologies affected
- Windows
- Extended Security Updates (ESU)
- Exchange Server
- SQL Server
- Apps
- Developer Tools
- Microsoft Office
- Microsoft Dynamics
- System Center
Solutions
Before installation of the software, please visit the vendor web-site for more details.
- Apply fixes issued by the vendor.
Vulnerability Identifier
Source
Related Link
https://msrc.microsoft.com/update-guide/releaseNote/2021-Jul
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