Remote, easily exploitable takeover of widely used Oracle Siebel CRM Integration (high CVSS 9.9) that can disrupt enterprise CRM and downstream systems.
CVE-2026-62588
Remote takeover of Oracle Siebel CRM Integration via HTTP
Is CVE-2026-62588 being exploited?
Not confirmed. CVE-2026-62588 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-62588?
CVE-2026-62588 is rated Critical with a CVSS score of 9.9. 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-2026-62588?
Yes. A fix has been recorded for CVE-2026-62588. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62588 affect?
CVE-2026-62588 affects Oracle Siebel CRM Integration (Open Integration) 25.12-26.6, Siebel CRM servers and integrated services, HTTP-facing Siebel integration endpoints. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62588?
Apply vendor patch when released; meanwhile restrict HTTP access, isolate Siebel, and monitor logs/IDS.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privileged network attacker can remotely take over Siebel CRM Integration, causing full C/I/A compromise and potential lateral impact to other products.
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.