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Critical severity · published Oct 20, 2026
CVE-2026-91491
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: LDAP Gateway)
9.8
CVSS
0.3%
EPSS
No
On KEV
Description
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: LDAP Gateway). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via LDAP to compromise Oracle Identity Manager Connector. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager Connector. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OI
Oracle Identity Manager Connector · Oracle Corporation
12.2.1.4.0; 14.1.2.1.0 · source: vendor
IM
Identity Manager Connector · Oracle
12.2.1.4.0; 14.1.2.1.0 · source: NVD
Affected product
OI
Oracle Identity Manager Connector
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91491
Vendor Advisory
https://www.oracle.com/security-alerts/cpuoct2026.html
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