Oracle HCM Common Architecture CVE-2026-101827

Requires a valid low-privileged account (PR:L) on Oracle HCM Common Architecture within Oracle E-Business Suite versions 12.2.3 through 12.2.15, with network HTTP access to the Internal Operations component. Exploitation is limited by HIGH attack complexity (AC:H): the attacker must satisfy a specific precondition or environmental factor not controlled by them (e.g., timing/race or configuration-dependent state) that makes reliable exploitation difficult. No end-user interaction is needed (UI:N), and scope is unchanged (S:U), confining impact to the HCM component's accessible data. The practical limiting factors are the authenticated-account prerequisite and the high complexity, which together make opportunistic mass exploitation unlikely.

This is a genuine but second-tier priority. The CVSS 3.1 base score of 7.1 (High) is driven by strong impact metrics (C:H/I:H/A:L) rather than ease of access: the vector AV:N/AC:H/PR:L/UI:N shows network reachability but with HIGH attack complexity and a requirement for an already-authenticated low-privileged account. No EPSS score was supplied in the input, and there is no CISA KEV listing and no public POC referenced, so no public exploit identified at time of analysis. The combination of AC:H plus PR:L meaningfully depresses real-world exploitability compared to a network-facing unauthenticated flaw, suggesting this is a high-impact-but-conditional issue rather than a mass-exploitation candidate. Note a tagging conflict: the input Tags include 'Authentication Bypass', which contradicts the CVSS requirement for valid low-privileged authentication (PR:L) - treat the auth-bypass label as suspect and rely on the CVSS vector, which indicates an authenticated attacker. Because this is drawn from the Oracle October 2026 Critical Patch Update, prioritize patching for internet-exposed EBS instances where low-privileged accounts are broadly provisioned.

An attacker who already holds a low-privileged application account on an internet-reachable Oracle E-Business Suite instance sends crafted HTTP requests to the HCM Common Architecture Internal Operations component, overcoming the high-complexity conditions to read, modify, or delete critical HCM data and degrade availability. No public exploit code is known, and the high attack complexity (AC:H) implies the attacker must win a race, defeat a specific precondition, or possess particular environmental knowledge to succeed reliably.