EUVD-2026-62043
GHSA-5x3f-44p2-h7rr
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Network-accessible pre-auth read disclosure with no complexity, privileges, or interaction required; confidentiality impact only, no integrity or availability effect.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
AnalysisAI
Unauthenticated network exposure in Oracle Database Server's RDBMS component allows remote attackers to read a subset of database-accessible data via Oracle Net without any credentials. Affected across three major release trains - 19c (19.3-19.32), 21c (21.3-21.23), and 23ai (23.4.0-23.26.3) - the flaw is tagged as an authentication bypass, suggesting the Oracle Net listener or a pre-auth code path fails to enforce access controls before returning data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required and no special client-side configuration is needed - the vulnerability is exploitable by any host that can reach the Oracle Net listener over the network (default TCP 1521). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.3 (Medium) reflects limited confidentiality impact with no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Oracle's Critical Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses this vulnerability across all three affected release trains. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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