Oracle Siebel CRM is a widely used enterprise CRM product; a high-impact unauthenticated network vuln affecting data integrity/confidentiality deserves broad IT/infosec attention.
CVE-2026-62591
Unauthenticated HTTP vuln in Oracle Siebel Integration allows modification and access to CRM data.
Is CVE-2026-62591 being exploited?
Not confirmed. CVE-2026-62591 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-62591?
CVE-2026-62591 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-62591?
Yes. A fix has been recorded for CVE-2026-62591. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62591 affect?
CVE-2026-62591 affects Oracle Siebel CRM Integration (Open Integration) versions 25.12–26.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62591?
Apply vendor patch when available; meanwhile restrict HTTP access, apply WAF rules and warn users.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated HTTP exploit (requires user interaction) can create, delete, modify, or access all Siebel CRM Integration data.
Immediate action required
- affected>= 25.12 and <= 26.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.