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CVE-2026-35276 – Unauthenticated Remote Vulnerability with Full-System Impact – Oracle PeopleSoft…

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Summary

CVE-2026-35276 is a high-severity vulnerability in Oracle PeopleSoft Enterprise PeopleTools, assigned a CVSS v3.1 base score of 8.1. The flaw is remotely exploitable over the network with no privileges and no user interaction required, and its CVSS impact metrics reflect maximum compromise of confidentiality, integrity, and availability. It was published on June 16, 2026, as part of the same Oracle security advisory wave that addressed the actively exploited critical vulnerability CVE-2026-35273 (CVSS 9.8) in the same product.

Technical details

  • Attack vector: Exploitable over the network (AV:N), requiring no authentication (PR:N) and no user interaction (UI:N)
  • Attack complexity: High (AC:H) — exploitation requires specific preconditions to be met
  • Impact: Maximum impact across confidentiality (C:H), integrity (I:H), and availability (A:H), indicating potential for full system compromise
  • Vulnerability type: No CWE classification or vulnerability description has been published in the CVE record; the precise vulnerability class has not been confirmed in any public source at this time
  • Scope: Unchanged (S:U) — impact is contained to the affected component

Affected software

Based on the Oracle Security Alert for the companion CVE-2026-35273 in the same product and advisory batch:

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

Note: Oracle has not published a standalone advisory for CVE-2026-35276. The version scope above is derived from the Oracle Security Alert covering the same product released in the same advisory wave. No independent version confirmation is available in public sources for this specific CVE at this time.

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 available Oracle security patches for PeopleSoft Enterprise PeopleTools 8.61 and 8.62 via Oracle’s My Oracle Support patch availability document referenced in the Security Alert.
  • Interim workarounds (if patching cannot be applied immediately): Oracle’s advisory for the companion CVE in the same advisory batch recommends:
    • Disabling the Environment Management Hub (EMHub) service
    • Blocking external network access to the /PSEMHUB/* and /PSIGW/HttpListeningConnector endpoints
  • Restrict internet-facing exposure of all PeopleSoft instances and apply network-layer access controls to limit the potential attack surface.

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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How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
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