CVE-2026-21926
HIGHSiebel CRM Deployment 17.0-25.2 - Unauthenticated Denial of Service via TLS
Title source: llmDescription
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-25.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Deployment. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://www.oracle.com/security-alerts/cpujan2026.html
Scores
CVSS v3
7.5
EPSS
0.0007
EPSS Percentile
21.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
Status
published
Products (1)
oracle/siebel_customer_relationship_management_deployment
17.0 - 25.2
Published
Jan 20, 2026
Tracked Since
Feb 18, 2026