CVE-2026-91568

highpriority · track · 31EPSS 0.004 · 28 %ileDEFRUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.36% (28th) EPSS

CVSS 7.7 · high

Is it mine?

3 products

Check your exposure

Who says so?

2 sources

cert_bund · certfr

EPSS · scored 2026-10-22

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all RDBMS accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

cvss

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

7.7

010

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

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nprimary · secalert_us@oracle.com USexploitability 3.1 · impact 4

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-266USLLM-inferred

affected products (3)

Products and version ranges known to be affected.

Oracle Database Server 19.3-19.32all versionscert_bundDEcpe:/a:oracle:database_server:19.3-19.32
Oracle Database Server 21.3-21.23all versionscert_bundDEcpe:/a:oracle:database_server:21.3-21.23
Oracle Database Server 23.4.0-23.26.3all versionscert_bundDEcpe:/a:oracle:database_server:23.4.0-23.26.3

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-4061Oracle Database Server: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Database Server ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
CERTFR-2026-AVI-1349Multiples vulnérabilités dans Oracle Database ServerFrançais2026-10-21vendor · 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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