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CVE-2026-35279 – Unauthenticated RCE in Performance Monitor – Oracle PeopleSoft Enterprise People…

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Summary

CVE-2026-35279 is a high-severity vulnerability in the Performance Monitor component of Oracle PeopleSoft Enterprise PT PeopleTools, affecting versions 8.61 and 8.62. An unauthenticated remote attacker can exploit this flaw over HTTP with no user interaction required, potentially achieving full system takeover. The vulnerability was disclosed on June 16, 2026, as part of Oracle’s June 2026 Critical Security Patch Update (CSPU), alongside a cluster of other high-severity PeopleTools flaws being actively targeted in the wild.

Technical details

  • Root cause: A flaw in the Performance Monitor component of PeopleSoft Enterprise PeopleTools that is exploitable by unauthenticated network-based attackers via HTTP
  • Trigger conditions: Internet-accessible PeopleSoft PeopleTools instance running version 8.61 or 8.62; no credentials or user interaction required to trigger the vulnerability
  • Attack vector: Network (HTTP); no authentication required; no user interaction required
  • Attack complexity: High (CVSS AC:H — exploitation requires specific conditions to be met, but is feasible for a motivated attacker)
  • Impact: Full compromise of confidentiality, integrity, and availability; Oracle’s advisory language describes the risk as system "takeover"

Affected software

  • Oracle PeopleSoft Enterprise PT PeopleTools 8.61
  • Oracle PeopleSoft Enterprise PT PeopleTools 8.62

Severity

CVSS v3.1 Base Score: 8.1 (HIGH)
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply Oracle’s June 2026 Critical Security Patch Update (CSPU / CPU167) patches for PeopleSoft Enterprise PT PeopleTools. Oracle strongly recommends applying these patches without delay. Refer to Oracle’s patch availability documentation linked from the June 2026 CSPU advisory for installation instructions specific to your version.
  • If immediate patching is not feasible: Restrict network access to the Performance Monitor component and all PeopleSoft HTTP/HTTPS endpoints to trusted internal IP ranges. Block public internet access to PeopleSoft-characteristic paths (e.g., /psp/, /psc/) at the perimeter until patching is completed.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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