Overview
CVE-2025-20766 is a security vulnerability affecting the display component of a system. It is characterized by a memory corruption issue stemming from improper input validation. Successfully exploiting this vulnerability could allow a malicious actor, who has already obtained System privilege, to achieve local escalation of privilege. Importantly, user interaction is not required for exploitation.
The vulnerability is identified by the Patch ID ALPS10196993 and Issue ID MSV-4820.
Technical Details
The root cause of CVE-2025-20766 lies in insufficient validation of input data processed by the display component. This lack of validation allows a specially crafted input to overwrite memory, leading to corruption. The exact nature of the vulnerable code is not explicitly detailed in the public description, but the improper input validation within the display component is confirmed. The vulnerability can be triggered by an attacker who has achieved System privilege to corrupt memory allocated to the display component. The lack of user interaction requirement makes this a more critical issue.
CVSS Analysis
The CVSS score for CVE-2025-20766 is currently listed as N/A (Not Available). This may indicate that the score is still being calculated, or that the reporting party did not provide a specific score. The absence of a score should not diminish the importance of addressing this vulnerability, as any potential for privilege escalation is a serious security concern.
Given that exploitation requires existing System privileges and leads to local privilege escalation, a potential CVSS score would likely fall within the medium to high range, depending on the ease of exploitation and the scope of the escalated privileges.
Possible Impact
The primary impact of CVE-2025-20766 is the potential for local privilege escalation. An attacker who has already compromised the system with System privileges could leverage this vulnerability to gain even higher levels of access, potentially leading to:
- Complete system control
- Data theft and modification
- Installation of malware
- Denial of service
Because user interaction is not required for exploitation, the attack surface is increased, making this vulnerability a significant risk.
Mitigation or Patch Steps
The recommended mitigation for CVE-2025-20766 is to apply the patch provided by the vendor. The patch ID is ALPS10196993. Users should consult the vendor’s security bulletin for detailed instructions on obtaining and applying the patch. Keeping systems up-to-date with the latest security patches is a crucial step in protecting against this and other vulnerabilities.
