CVE-2026-61321
Remote low‑privilege HTTP exploit in Oracle Siebel CRM allows full data modification.
Is CVE-2026-61321 being exploited?
Not confirmed. CVE-2026-61321 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 0.34% probability of exploitation in the next 30 days.
How severe is CVE-2026-61321?
CVE-2026-61321 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-2026-61321?
Yes. A fix has been recorded for CVE-2026-61321. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-61321 affect?
CVE-2026-61321 affects Oracle Siebel CRM Cloud Applications, Siebel Cloud Manager, Versions 22.3 - 26.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-61321?
Patch ASAP when released; restrict HTTP access, deploy WAF, and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthorized creation, deletion, modification and full access to all Siebel CRM accessible data via HTTP by a low‑privileged attacker.
Immediate action required
- affected>= 22.3 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.