CVE-2026-62455 Missing authorization in Siebel CRM Cloud Applications

High 8.3 Published 18 Aug 2026 Updated 20 Aug 2026

Low-privileged attackers can modify or read data and cause denial of service in Siebel CRM Cloud Applications due to missing authorization checks.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-62455?

CVE-2026-62455 is a high-severity missing authorization vulnerability in Oracle Siebel Crm, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.6. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H).

Weakness: CWE-284

Which versions are affected by CVE-2026-62455?

It affects 1 product.

Products include Oracle Siebel Crm.

How do I fix CVE-2026-62455?

No fix has been published for CVE-2026-62455 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-62455 being exploited?

There is no known exploitation of CVE-2026-62455 in the wild and no public exploit code.

All Oracle Siebel Crm vulnerabilities

Sources

Also known as GHSA-cgpf-mrh9-xhpw.