Read the docs
TI-2026-77446 Aliases CVE-2026-91387GHSA-mq75-6x7h-4jch

Improper access control in Oracle Siebel CRM End User

Priority LOW 24CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
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 End User versions 17.0 through 26.9 are affected. Improper access control (CWE-284) in the Open UI component lets a remote attacker with low privileges over HTTP read a subset of accessible data and insert, update or delete some accessible data.

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

Description from the CNA

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00222 12th 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 End User17.0 – 26.9—No fix listedCNA
  • Siebel CRM End User VendorOracle Affected 17.0 – 26.9 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*17.0 – 26.9VulnerableOracle
  • cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:* Versions 17.0 – 26.9 Vulnerable ·Oracle

Remediation

No fixed version is listed for Siebel CRM End User.

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 End User — oracle.com/security-alerts/cpuoct2026.html

    14 records Highest priority Priority MEDIUM 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-77500 Missing authentication in Oracle Siebel CRM End User exposes dataPriority MEDIUM 41
    • TI-2026-77778 Access control flaw in Oracle Siebel CRM End User exposes dataPriority LOW 39
    • TI-2026-77487 Improper access control in Oracle Siebel CRM End User exposes dataPriority LOW 35
    Show all 14 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91387
  2. 2026-10-21 Alias added: GHSA-mq75-6x7h-4jch
  3. 2026-10-21 Weakness changed · CISA ADP
  4. 2026-10-21 CISA SSVC decision points changed
  5. 2026-10-21 Priority changed: MEDIUM → LOW

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