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TI-2026-77269 Aliases CVE-2026-91209GHSA-fvcw-w8hh-35qw

Improper access control in the X Window System of Oracle Solaris

Priority LOW 18CWE-284Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

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

Summary

Oracle Solaris 11.4 has an improper access control flaw (CWE-284) in its X Window System component. A low privileged attacker who can log on to the host can exploit it, but only with a user other than the attacker taking action. A successful attack can change or delete some accessible data, read a subset of it, or partially disrupt the service. The CVSS 3.1 base score is 4.2 (medium).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Vulnerability in the Oracle Solaris product of Oracle Systems (component: X Window System). The supported version that is affected is 11.4. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Solaris accessible data as well as unauthorized read access to a subset of Oracle Solaris accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Solaris. CVSS 3.1 Base Score 4.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00095 0th 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
OracleOracle Solaris11.4—No fix listedCNA
  • Oracle Solaris VendorOracle Affected 11.4 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:oracle:solaris:*:*:*:*:*:*:*:*——Oracle
  • cpe:2.3:o:oracle:solaris:*:*:*:*:*:*:*:* Versions — — ·Oracle

Remediation

The sources list no fixed version for Oracle Solaris.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fixed in the same release

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

  • Advisory ·

    Oracle Solaris — oracle.com/security-alerts/cpuoct2026.html

    26 records Highest priority Priority MEDIUM 4 MEDIUM, 22 LOW

    Other records, highest priority first

    • TI-2026-77847 Improper authentication in Oracle Solaris enables remote takeoverPriority MEDIUM 49
    • TI-2026-77045 Missing authentication in Oracle Solaris Image Packaging SystemPriority MEDIUM 49
    • TI-2026-77312 Uncontrolled resource consumption in Oracle Solaris servicesPriority MEDIUM 42
    Show all 26 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91209
  2. 2026-10-21 Alias added: GHSA-fvcw-w8hh-35qw
  3. 2026-10-28 Weakness changed · CISA ADP
  4. 2026-10-28 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

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