Siebel is a widely used enterprise CRM; this flaw allows unauthorized full read/write/delete of CRM data, risking major data loss/exposure and business disruption across customers.
CVE-2026-83087
Siebel CRM Cloud Manager flaw allows low-priv remote actor full access to CRM data
Is CVE-2026-83087 being exploited?
Not confirmed. CVE-2026-83087 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.
How severe is CVE-2026-83087?
CVE-2026-83087 is rated High with a CVSS score of 8.2. 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-2026-83087?
Not known from our data. No patch reference has been recorded for CVE-2026-83087, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-83087 affect?
CVE-2026-83087 affects Oracle Siebel CRM Cloud Applications (Siebel Cloud Manager) 22.3-26.7. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-83087?
Apply vendor patch/mitigation when available; restrict Siebel HTTP access and monitor logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote low-privileged attacker via HTTP can create, delete, modify, and read all Siebel CRM accessible data (scope change).
Immediate action required
- affected>= 22.3 and <= 26.7
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.