CVE-2026-62591 Missing authorization in Siebel CRM Integration
Unauthenticated attackers can read and modify critical Siebel CRM Integration data via HTTP, requiring user interaction.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-62591?
CVE-2026-62591 is a high-severity missing authorization vulnerability in Oracle Siebel Crm, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration). Supported versions that are affected are 25.12-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Integration accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Integration accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-62591?
It affects 1 product.
Products include Oracle Siebel Crm.
How do I fix CVE-2026-62591?
No fix has been published for CVE-2026-62591 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-2026-62591 being exploited?
There is no known exploitation of CVE-2026-62591 in the wild and no public exploit code.
Other vulnerabilities in Oracle Siebel Crm
Sources
Also known as GHSA-m4r8-ffj2-843v.