Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Network-reachable JDBC endpoint with no credentials required, but mandatory user interaction gates exploitation; impact is integrity-only with no confidentiality or availability consequence.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the JDBC component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise JDBC. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all JDBC accessible data. CVSS 3.1 Base Score 6.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N).
AnalysisAI
Integrity compromise in Oracle Database Server's JDBC component allows unauthenticated network attackers to create, delete, or modify critical data or all JDBC-accessible data via Oracle Net. Affected releases span three supported branches: 19.3-19.31, 21.3-21.22, and 23.4.0-23.26.2. Exploitation requires human interaction from a party other than the attacker, limiting opportunistic mass exploitation; no public exploit code or CISA KEV listing has been identified at time of analysis.
Technical ContextAI
The vulnerability resides in the JDBC (Java Database Connectivity) component of Oracle Database Server, which provides the programmatic interface for Java applications to interact with the Oracle RDBMS. Connections are established and managed over the proprietary Oracle Net protocol (formerly SQL*Net). The affected CPE is cpe:2.3:a:oracle_corporation:oracle_database_server:*:*:*:*:*:*:*:*, covering the three active long-term release trains. No CWE has been assigned by Oracle, but the 'Authentication Bypass' tag supplied in the intelligence metadata suggests the root cause involves a flaw in how the JDBC layer validates or enforces session identity or access control, allowing unauthenticated callers to perform write operations on data they should not be able to modify. The CVSS vector (PR:N) confirms the attack requires no pre-existing credentials against the Oracle Net listener.
RemediationAI
Apply the patches distributed in Oracle's July 2026 Critical Patch Update, available at https://www.oracle.com/security-alerts/cpujul2026.html. The CPU advisory is the authoritative source for patched build numbers across the 19c, 21c, and 23ai release trains; no specific patched version number was independently confirmed in the available intelligence data, so administrators should consult the advisory directly to identify the correct target release for their environment. As a compensating control where immediate patching is not possible, restrict network access to Oracle Net listeners (default TCP 1521) via firewall rules or Oracle Connection Manager to limit exposure to trusted application-tier hosts only - this does not eliminate the vulnerability but substantially raises the barrier by reducing the attacker's ability to reach the JDBC layer. Additionally, review and enforce the principle of least privilege on JDBC-accessible schemas so that even if exploitation occurs, the scope of data that can be created, modified, or deleted is minimized. Monitor Oracle Net connection logs for unexpected source IPs or anomalous session patterns as a detective control.
More in Oracle Database Server
View allNet Service takeover in Oracle Database Server 23.4.0 through 23.26.2 allows unauthenticated remote attackers reaching t
Full database takeover in Oracle Database Server's RDBMS component allows an authenticated, low-privileged user with onl
Complete denial of service in the RDBMS component of Oracle Database Server 23.4.0 through 23.26.2 lets an unauthenticat
Remote denial of service in Oracle Database Server 23.4.0 through 23.26.2 allows unauthenticated network attackers to cr
Remote denial-of-service in Oracle Database Server's Net Service component (versions 23.4.0 through 23.26.2) allows unau
Unauthorized data access in Oracle Database Server's Java VM component allows a remote, unauthenticated attacker to comp
Full takeover of the JDBC component in Oracle Database Server is achievable by a high-privileged network attacker operat
Integrity compromise in Oracle Database Server's embedded Java VM component allows network-connected attackers holding o
Unauthenticated remote exploitation of the RDBMS component in Oracle Database Server 19c, 21c, and 23ai allows network-a
Confidentiality breach in the JDBC component of Oracle Database Server allows an unauthenticated attacker positioned on
Unauthorized disclosure of sensitive XML data from Oracle Database Server's XML Database component is possible via netwo
Unauthorized data manipulation in Oracle Database Server's RDBMS component allows a highly privileged, network-connected
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46546
GHSA-xp7q-3hqw-c4rw