This vulnerability affects Oracle Common Applications Calendar component of Oracle E-Business Suite versions 12.2.3 to 12.2.15. It is exploitable by an attacker with low privileges and network access over HTTP, enabling unauthorized modification of critical data and partial denial of service conditions. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and low availability impact. Oracle has included this vulnerability in its September 2026 Critical Security Patch Update, which provides patches for this and many other vulnerabilities across multiple products.

Successful exploitation allows unauthorized creation, deletion, or modification of critical data within Oracle Common Applications Calendar, potentially compromising data integrity. Additionally, attackers can cause a partial denial of service affecting availability of the calendar service. There is no confidentiality impact reported. The vulnerability requires network access and low privileges, increasing the risk of exploitation in accessible environments.

Oracle has released patches addressing this vulnerability as part of the September 2026 Critical Security Patch Update. Customers are strongly advised to apply the relevant patches for Oracle E-Business Suite versions 12.2.3 through 12.2.15 without delay. Oracle emphasizes remaining on actively supported versions and promptly applying security patches to mitigate exploitation risks. Patch status is confirmed as available via the official Oracle advisory.