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CVE-2026-73954 – Unauthenticated RCE via Business Interlink – Oracle PeopleSoft Enterprise PeopleToo

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Summary

CVE-2026-73954 is a vulnerability in the Business Interlink component of Oracle PeopleSoft Enterprise PeopleTools that allows a network-based attacker to compromise the system without any authentication or user interaction. Oracle rates the flaw "difficult to exploit," but a successful attack results in complete compromise of confidentiality, integrity, and availability. The issue carries a CVSS v3.1 base score of 8.1 (High) and affects PeopleTools versions 8.61 through 8.63.

Technical details

  • Component: PeopleSoft Enterprise PeopleTools — Business Interlink.
  • Access vector: Exploitable remotely over HTTP/HTTPS, with no authentication or privileges required and no user interaction needed.
  • Attack complexity: Rated High by Oracle, meaning exploitation depends on conditions outside the attacker’s direct control (e.g., specific configuration or timing), making it "difficult to exploit" compared to a straightforward remote flaw.
  • Impact: Successful exploitation yields complete takeover of the PeopleSoft Enterprise PeopleTools environment — full loss of confidentiality, integrity, and availability.
  • Root cause: Not publicly disclosed by Oracle at this time; no technical write-up or proof-of-concept has been published.

Affected software

  • Oracle PeopleSoft Enterprise PeopleTools versions 8.61 through 8.63.

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector: 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 the fix supplied in Oracle’s Critical Patch Update for September 2026, which addresses CVE-2026-73954 for PeopleTools 8.61–8.63. Upgrade to the patched PeopleTools release identified in the applicable Oracle Critical Patch Update advisory.
  • If patching cannot be applied immediately: Restrict network exposure of PeopleSoft Enterprise PeopleTools interfaces (particularly Business Interlink-related endpoints) to trusted networks only, and monitor internet-facing PeopleSoft assets for unusual traffic until the patch is applied. Oracle strongly recommends against delaying application of Critical Patch Update fixes.

References

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