CVSS 3.1 Score 6.2 of 10 (medium)


Published Jan 29, 2024
Updated: May 8, 2024
CWE ID 190
CWE ID 787


CVE-2023-40548 is a buffer overflow vulnerability found in Shim, specifically in the 32-bit system. The vulnerability occurs due to an addition operation involving a user-controlled value parsed from the PE binary used by Shim. This leads to a heap-based buffer overflow during memory allocation operations, resulting in memory corruption and potential crash or data integrity issues during the boot phase. The vulnerability affects various products, including aivUR7, aivUR6, s5UiSY, and others. To remediate this vulnerability, organizations should apply the necessary patches or updates provided by the vendor. The danger posed to an organization includes potential system crashes, data corruption, and unauthorized access if exploited by malicious actors.


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