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TI-2026-77425 Aliases CVE-2026-91366GHSA-m883-6g74-8f6j

Improper access control in Oracle Siebel CRM Cloud Applications

Priority LOW 21CWE-284Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Oracle Siebel CRM Cloud Applications versions from 22.3 through 26.9 are affected. An improper access control flaw (CWE-284) lets an unauthenticated attacker on the physical communication segment attached to the hardware running the application compromise it, which may also impact other products. Successful attacks allow unauthorized updates, inserts, deletes and reads of some accessible data, and exploitation is difficult.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 4.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00201 10th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleSiebel CRM Cloud Applications22.3 – 26.9—No fix listedCNA
  • Siebel CRM Cloud Applications VendorOracle Affected 22.3 – 26.9 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*22.3 – 26.9VulnerableOracle
  • cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:* Versions 22.3 – 26.9 Vulnerable ·Oracle

Remediation

The sources list no fixed version for Oracle Siebel CRM Cloud Applications.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle Siebel CRM Cloud Applications — oracle.com/security-alerts/cpuoct2026.html

    25 records Highest priority Priority MEDIUM 1 MEDIUM, 24 LOW

    Other records, highest priority first

    • TI-2026-77761 Access control flaw in Oracle Siebel CRM Cloud Applications enables takeoverPriority MEDIUM 43
    • TI-2026-77753 Missing authentication in Oracle Siebel CRM Cloud ApplicationsPriority LOW 36
    • TI-2026-77430 Sensitive information exposure in Oracle Siebel CRM Cloud ApplicationsPriority LOW 32
    Show all 25 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91366
  2. 2026-10-21 Alias added: GHSA-m883-6g74-8f6j
  3. 2026-10-21 Weakness changed · CISA ADP
  4. 2026-10-21 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-44706 Improper access control in Oracle Siebel CRM Integration CVSS 3.1CRITICAL 9.8
  • TI-2026-44699 Improper access control in Oracle Siebel CRM Administration CVSS 3.1CRITICAL 9.8
  • TI-2026-44566 Improper access control in Oracle Siebel CRM Cloud Applications CVSS 3.1CRITICAL 9.9
  • TI-2026-43962 Improper access control in Oracle Siebel CRM Cloud Applications CVSS 3.1CRITICAL 9.8
  • TI-2026-34639 Missing authentication in Oracle Siebel CRM Development CVSS 3.1CRITICAL 9.8
  • TI-2026-34525 Improper access control in Oracle Siebel CRM Cloud Applications CVSS 3.1CRITICAL 9.8
See all 244 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences