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

Sicherheitsmeldung mit Schweregrad hoch. Sie wird laut CISA-KEV aktiv ausgenutzt und sollte priorisiert behandelt werden. Betroffene Kennungen: CVE-2013-3821, CVE-2017-3548, CVE-2026-35273. Technische Details im Tab „Originaltext“; empfohlene Schritte in der Checkliste.

Originaltext der Quelle (nicht übersetzt) – die deutsche Zusammenfassung findest du im Tab „Kurzfassung".

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. The vulnerability was added to the CISA KEV on June 12, 2026.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 …

Vollständiger Originalartikel ↗

• Betroffenheit im eigenen Stack prüfen (CVE-2013-3821, CVE-2017-3548, CVE-2026-35273): Versionen/Komponenten abgleichen.
• Originalquelle / Hersteller-Advisory lesen: https://www.rapid7.com/blog/post/etr-active-exploitation-of-oracle-peoplesoft-zero-day-cve-2026-35273
• Priorität HOCH: laut CISA-KEV aktiv ausgenutzt – bevorzugt patchen.
• Verfügbaren Patch oder Workaround einspielen und dokumentieren.