Oracle Solaris: Privilege escalation via improper privilege management
Summary
Oracle Solaris 11.3 and 11.4 are affected by a vulnerability in the Utility component (CWE-269, improper privilege management). According to the CNA record, an attacker who can reach the system can take over Solaris, with high impact on confidentiality, integrity and availability. The description requires a local logon, while the CVSS vector lists no privileges required, so the exact preconditions should be confirmed with Oracle.
Affected
- Oracle Solaris 11.3
- Oracle Solaris 11.4
Fixed in
- Solaris 11.4: Unknown whether SRU 96 (20 October 2026, Critical Patch Update) fixes this CVE; verification required.
- Solaris 11.3: Unknown.
Workaround
Unknown.
Exploitation
- Not known to be exploited in the wild; not listed in CISA KEV as of 21 October 2026 according to third-party sources.
- No public proof-of-concept found in the sources checked.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- EPSS 0.00129 (low predicted exploitation probability).
Our recommendation
- Check your asset inventory for Oracle Solaris hosts. If none exist, this CVE has no impact on your environment.
- For Solaris 11.4 hosts: verify in Oracle's October 2026 advisory and My Oracle Support KB631614 that SRU 96 covers this CVE, then apply it via pkg update.
- For Solaris 11.3 hosts: obtain the fix status from Oracle via My Oracle Support and apply it as soon as it is available.
- Until patched, restrict local logon accounts and limit who can log in to affected hosts.
- Monitor for unexpected privilege changes and new local accounts.
- Recheck the CISA KEV catalogue before the next review.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Security Alert: Critical Patch Update October 2026 www.oracle.com
- Oracle Solaris 11.4 SRU 96 CPU announcement blogs.oracle.com
- Oracle Security Blog: October 2026 Critical Patch Update released blogs.oracle.com
- Vulners: CVE-2026-91348 vulners.com
- OpenCVE: CVE-2026-91348 app.opencve.io
- Brandefense: Oracle October 2026 Critical Patch Update brandefense.io
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 12:13.
Original description (NVD)
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility). Supported versions that are affected are 11.3 and 11.4. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in takeover of Oracle Solaris. CVSS 3.1 Base Score 8.4 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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