#Security Vulnerability

Improper link resolution before file access ('link following') in Host Process for Windows Tasks allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Untrusted pointer dereference in Storvsp.sys Driver allows an authorized attacker to deny service locally.

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

**According to the CVSS metrics, successful exploitation of this vulnerability could lead to a high loss of confidentiality (C:H), no effect on integrity (I:N) and some loss of availability (A:L). What does that mean for this vulnerability?** An attacker who successfully exploited this use after free vulnerability could view sensitive, previously freed memory heap information (Confidentiality) since the impacted component might be divulged to the attacker. While the attacker cannot make changes to disclosed information (Integrity), they might be able to force a crash within the function (Availability).

Improper access control in Customer Experience Improvement Program (CEIP) allows an authorized attacker to elevate privileges locally.

**How could an attacker exploit this vulnerability?** When multiple attack vectors can be used, we assign a score based on the scenario with the higher risk. In one such scenario for this vulnerability, the attacker could convince a victim to connect to an attacker controlled malicious application (for example, SMB) server. Upon connecting, the malicious server could compromise the protocol.

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.