Oracle Siebel CRM is a widely used enterprise CRM; this flaw allows data tampering and full DoS, risking business operations and data integrity across organizations.
CVE-2026-62455
Remote HTTP exploit in Oracle Siebel CRM enables data tampering and DoS.
Is CVE-2026-62455 being exploited?
Not confirmed. CVE-2026-62455 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-2026-62455?
CVE-2026-62455 is rated Low with a CVSS score of 3.1. 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-2026-62455?
Yes. A fix has been recorded for CVE-2026-62455. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62455 affect?
CVE-2026-62455 affects Oracle Siebel CRM Cloud Applications (Siebel Cloud Manager) 22.3-26.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62455?
Restrict HTTP access, place Siebel behind WAF/IP allowlist, increase monitoring; apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote low-privileged attacker can create/delete/modify CRM data, read subsets of data, and cause complete application DoS.
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.