What is CVE-2023-21948?

CVE-2023-21948 is a high-severity vulnerability in Oracle Solaris. CVSS score: 7.8/10. Published 2023-04-18.

How severe is CVE-2023-21948?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Oracle Solaris

CVE-2023-21948

Vulnerability in the Oracle Solaris product of Oracle Systems (component: Core). The supported version that is affected is 10. Easily exploitable vulnerability allows low privileged 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 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Published 2023-04-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (12.6th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Oracle Solaris — versions 10
Oracle Corporation Solaris Operating System — versions 10

References

www.oracle.com/security-alerts/cpuapr2023.html (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21948?: CVE-2023-21948 is a high-severity vulnerability in Oracle Solaris. CVSS score: 7.8/10. Published 2023-04-18.
How severe is CVE-2023-21948?: High severity. CVSS v3 base score is 7.8 out of 10.