CVE-2026-35273: Oracle PeopleSoft Enterprise PeopleTools

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

Yes, if you run Oracle PeopleSoft Enterprise PeopleTools. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-06-12, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-06-15; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns.
EPSS 96.7%, percentile 99.9: FIRST’s model estimates a 96.7% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
Editorial verdict: Act now. Oracle PeopleSoft CVE-2026-35273: ShinyHunters Zero-Day — If you run PeopleTools 8.61 or 8.62 with PIA reachable from the internet, apply Oracle's fix and lock down the EMHub/PSIGW paths today, then hunt back to May 27, 2026.

What it is

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Updates Environment Management). Supported versions that are affected are 8.61 and 8.62. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CISA’s summary

Oracle PeopleSoft Enterprise PeopleTools contains a missing authentication for critical function vulnerability which could allow an unauthenticated attacker to obtain takeover of PeopleSoft Enterprise PeopleTools.

Weakness type: CWE-306.

Product: Oracle PeopleSoft Enterprise PeopleTools · Assigned by: oracle · Published: 2026-06-11

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
Oracle Corporation	PeopleSoft Enterprise PeopleTools	8.61, 8.62

Severity scores

Scored by	CVSS	Score	Vector
oracle	3.1	9.8 Critical	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Attack vector: network (remotely reachable)
Attack complexity: low
Privileges required: none (no login)
User interaction: none
Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

CISA KEV: added 2026-06-12; federal due date 2026-06-15. Known ransomware use: Known.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
FIRST EPSS (model of 2026-10-21): 96.68% probability of exploitation activity in the next 30 days; percentile 99.9.

Timeline

2026-06-10 — erroneo.us brief: Oracle PeopleSoft CVE-2026-35273: ShinyHunters Zero-Day
2026-06-11 — CVE record published by oracle
2026-06-12 — Added to CISA’s Known Exploited Vulnerabilities catalog
2026-06-15 — CISA remediation deadline for US federal agencies
2026-08-04 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.