CVE-2026-87423

mediumpriority · track · 18EPSS 0.001 · 1 %ileDEFRUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.10% (1st) EPSS

CVSS 4.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

2 sources

cert_bund · certfr

EPSS · scored 2026-10-23

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 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 4.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L).

cvss

Technical severity, 0–10. One row per scoring source.

4.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.5mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Lprimary · secalert_us@oracle.com USexploitability 1 · impact 3.4

v3.14.1mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USCWE-269US

affected products (3)

Products and version ranges known to be affected.

Oracle Systems 8.8all versionscert_bundDEcpe:/a:oracle:systems:8.8
Systemsall versionscert_bundDEcpe:/a:oracle:systems:11.3
Systemsall versionscert_bundDEcpe:/a:oracle:systems:11.4

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-4091Oracle Systems: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Systems ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
CERTFR-2026-AVI-1353Multiples vulnérabilités dans Oracle SystemsFrançais2026-10-21vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund certfr NVD CVE.org MITRE

published 2026-10-20modified 2026-10-21

references (1) nvd

External citations — patches, advisories, analysis.

https://www.oracle.com/security-alerts/cpuoct2026.html

scry

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