CVE-2026-70855 Missing authorization in Siebel Apps - Self Service
Unauthenticated attackers can modify or read critical Siebel CRM data via HTTP, requiring user interaction to exploit.
- 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-2026-70855?
CVE-2026-70855 is a critical missing authorization vulnerability in Oracle Corporation Siebel Apps - Self Service, 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 Apps - Self Service product of Oracle Siebel CRM (component: Helpdesk/Training). Supported versions that are affected are 17.0-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel Apps - Self Service. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel Apps - Self Service, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel Apps - Self Service accessible data as well as unauthorized access to critical data or complete access to all Siebel Apps - Self Service accessible data. CVSS 3.1 Base Score 9.3 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-70855?
How do I fix CVE-2026-70855?
No fix has been published for CVE-2026-70855 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-2026-70855 being exploited?
There is no known exploitation of CVE-2026-70855 in the wild and no public exploit code.
Sources
Also known as GHSA-rpm3-wx24-q75c.