CVE-2026-35273

Zero Day Initiative Published Advisories · Jun 24, 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.

Zero Day Initiative Published Advisories · Jun 24, 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.

Zero Day Initiative Published Advisories · Jun 24, 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.

Tenable Blog · Jun 18, 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 that sits between the larger quarterly Critical Patch Updates (CPUs), addressing a focused set of high-severity issues on a faster cadence. This CSPU contains fixes for 243 unique CVEs in 245 security updates across 11 Oracle product families. Out of the 245 security updates published, 49.8% of patches were assigned a critical severity. Critical severity patches accounted for the bulk of security patches at 49.8%, followed by high severity patches at 42.4%.This month's update includes 122 critical patches across 122 CVEs.SeverityIssues PatchedCVEsCritical122122High104102Medium1515Low44Total245243AnalysisThis month's update saw the Oracle Fusion Middleware product family contain the highest number of patches at 106, accounting for 43.3% of the total patches, followed by Oracle E-Business Suite at 55 patches, which accounted for 22.4% of the total patches.A full breakdown of the patches for this CSPU can be seen in the following table, which also includes a count of vulnerabilities that can be exploited over a network without authentication.Oracle Product FamilyNumber of PatchesRemote Exploit without AuthOracle Fusion Middleware10653Oracle E-Business Suite556Oracle JD Edwards2012Oracle Enterprise Manager166Oracle Siebel CRM127Oracle PeopleSoft117Oracle Virtualization100Oracle MySQL84Oracle Communications33Oracle Systems31Oracle Supply Chain11Oracle PeopleSoft zero-day exploitedOn...

CyberInsider · Jun 12, 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.

Rapid7 · Jun 12, 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 8.61 and 8.62 are affected.CVE-2026-35273 was reported to Oracle through TrendAI's Zero Day Initiative. According to a report published by Mandiant on June 11, 2026, this vulnerability has been exploited in the wild as a zero-day prior to the vendor security alert, with active exploitation observed between May 27 and June 9, 2026, predating Oracle's advisory by two weeks.Mandiant has attributed the campaign to UNC6240 (ShinyHunters), a financially motivated cybercriminal collective known for data theft and extortion. ShinyHunters has been linked to breaches across cloud services, SaaS platforms, and telecommunications providers, frequently exploiting weak authentication controls, stolen credentials, and cloud misconfigurations rather than deploying sophisticated malware.Based on information published by Mandiant, the campaign heavily targeted the higher education sector; 68 percent of the more than 100 notified organizations were universities and colleges. The observed exploitation targeted PeopleSoft's Environment Management Hub (PSEMHUB) endpoints, and data stolen during the campaign was published on the ShinyHunters Data Leak Site (DLS) on June 9, 2026.The /PSIGW/HttpListeningConnector URI path appears in both the indicators of compromise for this campaign and in a PeopleSoft exploit chain for CVE-2013-3821, detailed by Lexfo in 2017. A related XML External Entity (XXE)...

All CISA Advisories · Jun 12, 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 22-01. BOD 26-04 reinforces the importance of the KEV catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s Known Exploited Vulnerabilities (KEV) catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. Aware of an exploited vulnerability not currently listed in the KEV catalog? Submit for potential addition: KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance. 

TheHackerNews · Jun 11, 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

DarkWebInformer · Jun 11, 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.

BleepingComputer · Jun 11, 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. [...]

Google Threat Intelligence · Jun 11, 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 predates Oracle's June 10, 2026 advisory, the vulnerability was exploited as a zero-day. Upon becoming aware of active scanning and exploitation, we initiated notifications to over 100 global organizations whose IP addresses correlated with potentially vulnerable endpoints. Most of these organizations were based in the United States, and 68 percent operated within the higher education sector. Subsequently, public reports by @nahamike01 on X highlighted open attacker directories on the staging servers, allowing GTIG to perform a detailed triage of the threat actor's operations.  The attacker staging environments hosted customized MeshCentral agents masquerading as legitimate cloud endpoints, which they used to run administrative command queries and deploy a custom lateral movement and defacement script, [victim_abbreviation]_fanout.sh. This campaign directly correlates with subsequent data leaks of stolen organization data published on the ShinyHunters Data Leak Site (DLS) on June 9, 2026.  We recommend that organizations running Oracle PeopleSoft take the following immediate actions to best defend themselves. Additional remediation and hardening guidance is included later in this post. aside_block ), ('btn_text', ''), ('href', ''), ('image', None)])]> Threat Detail & Campaign Overview On June 9 2026, public threat reports highlighted open attacker directories. GTIG...

Oracle Security Alerts · Jun 11, 2026

github · Created 2026-06-26 05:21:08 UTC · 0 stars

github · Created 2026-06-12 09:19:14 UTC · 1 stars

CVE-2026-35273

github · Created 2026-06-12 01:51:19 UTC · 0 stars

CVE-2026-35273

nuclei · Created Unknown