Microsoft has published a draft document that clarifies which loopholes security of Windows or its other products will receive an immediate update and which can be left for later.
The document describes the criteria that the Microsoft Troubleshooting Center uses to decide whether a problem has been reported vulnerability it will be patched immediately, usually in a security update on the next Patch Tuesday, or released with another month's updates.
Microsoft reports in a post on her blog that the paper aims to provide researchers with “more clarity about characteristics security, limits and fixes in Windows as well as service commitments ”.
The company's stated criteria for assessing the severity of vulnerabilities are summarized in two key questions:
1. Does the vulnerability break the promise of a security threshold or security feature that Microsoft is committed to defending? and
2. Does the severity of the vulnerability meet the company's line of service?
If the answer to both of the above questions is "yes", the error will be fixed in the next security update, but if the answer to both questions is "no", the vulnerability will be recorded for a subsequent update or a later version of the affected product , feature or service.
The promptness of the service used by the company seems to be determined by Microsoft's severity rating system, to help developers understand the risk of any vulnerabilities. So we have vulnerabilities that are critical, important, moderate, low and not at all.
"If a vulnerability is determined to be critical or important and involves a security boundary or security feature that we have an obligation to service, then it will be addressed through a security update," the document states.
Microsoft lists below the eight types of security limits for which it has a service commitment. For example the company distinguishes vulnerabilities between kernel operation and user functions.
The security features that the company is committed to serving immediately are: BitLocker and Secure Boot, Windows Defender System Guard, Windows Defender Application Control, Windows Hello, Windows Resource Access Control, platform encryption, Host Guardian Service, and authentication protocols.
All registered security limits and security features supported by the company are included in the program Bug Bounty of Microsoft.
However, Microsoft service commitments do not apply to certain defense features, such as Control Flow Guard, Code Integrity Guard, and Arbitrary Code Guard. Other features excluded from service commitments include ransomware protection, and Microsoft antivirus, Windows Defender.
You can read the document for more information (PDF).
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