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CVE-2026-61286 – Unauthenticated Data Manipulation / Partial DoS – Oracle Enterprise Manager Base Pl

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Summary

CVE-2026-61286 is a high-severity vulnerability in the Event Management component of Oracle Enterprise Manager Base Platform. It allows an unauthenticated attacker with network access via HTTP to compromise the platform, enabling unauthorized creation, deletion, or modification of critical data, unauthorized read access to a subset of accessible data, and a partial denial of service. Oracle disclosed the flaw in its August 2026 Critical Patch Update, and it carries a CVSS v3.1 base score of 8.6 (High).

Technical details

  • Root cause: A flaw in the Event Management component of Oracle Enterprise Manager Base Platform that fails to properly enforce authentication/authorization on network-accessible functionality.
  • Trigger conditions: No authentication credentials or user interaction are required; the vulnerability is remotely exploitable over HTTP.
  • Attack vector: Network (AV:N) — an attacker only needs network access to the Enterprise Manager HTTP interface; attack complexity is low (AC:L).
  • Impact: Successful exploitation permits unauthorized creation, deletion, or modification of critical data (High Integrity impact), read access to a limited subset of otherwise accessible data (Low Confidentiality impact), and a partial denial of service (Low Availability impact). The scope is unchanged (S:U), meaning impact is confined to Enterprise Manager Base Platform itself.

Affected software

  • Oracle Enterprise Manager Base Platform, version 13.5
  • Oracle Enterprise Manager Base Platform, version 24.1

Severity

  • CVSS v3.1 Base Score: 8.6 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Mitigation and recommended actions

  • Immediate: Apply the Oracle Enterprise Manager patches released in the Oracle Critical Patch Update for August 2026, which address CVE-2026-61286 for the affected 13.5 and 24.1 releases. Oracle strongly recommends that customers apply Critical Patch Update fixes as soon as possible.
  • If patching cannot be performed immediately: Restrict network access to the Oracle Enterprise Manager HTTP console/interfaces to trusted management networks only (e.g., via firewall rules or network segmentation), and monitor Enterprise Manager access logs for unexpected or anomalous unauthenticated requests to Event Management endpoints until the patch can be applied.

References

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