CVE-2023-27068: 
Sitecore Experience Platform (XP) vulnerability analysis and mitigation

A critical deserialization vulnerability (CVE-2023-27068) was discovered in Sitecore Experience Platform through version 10.2. The vulnerability allows remote attackers to execute arbitrary code via ValidationResult.aspx. This vulnerability was disclosed in May 2023 and affects all versions of Sitecore Experience Platform up to and including 10.2 (NVD).

The vulnerability is classified as a Deserialization of Untrusted Data (CWE-502) issue. It has received a CVSS v3.1 base score of 9.8 (CRITICAL) with the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability is network-accessible, requires low attack complexity, needs no privileges or user interaction, and can result in complete compromise of system confidentiality, integrity, and availability (NVD).

The vulnerability allows remote attackers to execute arbitrary code on affected systems through the ValidationResult.aspx endpoint. Given the CVSS score and vector, successful exploitation could lead to complete system compromise, allowing attackers to execute unauthorized commands, access sensitive data, or take full control of the affected system (NVD).

Organizations should upgrade to a version of Sitecore Experience Platform newer than 10.2. The vulnerability has been addressed in subsequent releases as indicated in the release notes (Sitecore Release Notes).