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CVE-2026-91421

Quick assessment

Affected
Oracle Corporation Siebel CRM Deployment
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Oracle Siebel CRM 的 Siebel CRM Deployment 产品（组件：服务器基础设施）中存在漏洞。受影响的受支持版本为 17.0 至 26.9。该漏洞难以利用，但允许拥有网络访问权限的未认证攻击者通过 HTTP 协议对 Siebel CRM Deployment 发起攻击。成功利用此漏洞可能导致攻击者在未经授权的情况下使 Siebel CRM Deployment 陷入挂起状态或频繁重复崩溃，从而造成完全拒绝服务（DoS）。CVSS 3.1 基础评分为 5.9（主要影响可用性）。CVSS

CVSS 5.9 · Medium EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1499.006

Affected Version Matrix 1

VendorProduct Version RangeStatus
Oracle Corporation Siebel CRM Deployment 17.0≤ 26.9 affected
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I. Basic Information for CVE-2026-91421

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Oracle Corporation Siebel CRM Deployment 17.0 ~ 26.9 -

II. Public POCs for CVE-2026-91421

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III. Intelligence Information for CVE-2026-91421

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Vendor Advisories for CVE-2026-91421 (1)

Same Patch Batch · Oracle Corporation · 2026-10-20 · 1076 CVEs total

CVE-2026-91221 10.0 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程代码执行漏洞
CVE-2026-91216 10.0 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程代码执行漏洞
CVE-2026-87337 10.0 CRITICAL Oracle Access Manager 12.2.1.4.0/14.1.2.1.0 远程代码执行
CVE-2026-91231 10.0 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程代码执行漏洞
CVE-2026-91299 10.0 CRITICAL Oracle JD Edwards 9.2.0-9.2.26.5远程代码执行漏洞
CVE-2026-101809 10.0 CRITICAL Oracle EBS 12.2.3-15 Workflow 远程接管漏洞
CVE-2026-91251 9.9 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程接管漏洞
CVE-2026-91222 9.9 CRITICAL Oracle BPM Suite 12.2.1.4.0/14.1.2.0.0 SOAP 远程接管漏洞
CVE-2026-91354 9.9 CRITICAL Oracle Outside In 8.5.8远程代码执行漏洞
CVE-2026-91224 9.9 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程接管漏洞
CVE-2026-91232 9.9 CRITICAL Oracle SOA Suite 12.2.1.4.0 和 14.1.2.0.0 远程代码执行漏洞
CVE-2026-101446 9.9 CRITICAL Oracle Siebel CRM 17.0-26.9 远程接管漏洞
CVE-2026-101528 9.9 CRITICAL Oracle Enterprise Manager 13.5/24.1 远程代码执行漏洞
CVE-2026-91250 9.9 CRITICAL Oracle SOA Suite 12.2.1.4.0/14.1.2.0.0 远程接管漏洞
CVE-2026-101501 9.9 CRITICAL Oracle Trusted Answer Search 26.1 PL/SQL远程代码执行漏洞
CVE-2026-101503 9.9 CRITICAL Oracle Trusted Answer Search 26.1 远程代码执行漏洞
CVE-2026-91638 9.9 CRITICAL Oracle Essbase 21.8.3.0.0 远程接管漏洞
CVE-2026-91637 9.9 CRITICAL Oracle Essbase 21.8.3.0.0 远程接管漏洞
CVE-2026-91658 9.9 CRITICAL Oracle Essbase 21.8.3.0.0 远程代码执行漏洞
CVE-2026-91663 9.9 CRITICAL Oracle Essbase 21.8.3.0.0 远程代码执行漏洞

Showing top 20 of 1076 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Siebel CRM Deployment
Same vendor: Oracle Corporation

V. Comments for CVE-2026-91421

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