CVE-2026-73964 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Oracle Database Server instances, especially those with high-privileged access and network connectivity, should assess their exposure and take necessary actions to prevent unauthorized access.

Why it matters

Defenders should prioritize verifying exposure in their Oracle Database Server instances, especially those with high-privileged access and network connectivity, to prevent unauthorized read access to RDBMS data.

• Verification of Oracle Database Server versions and configurations to identify potential exposure
• Restriction of network access to RDBMS components to prevent exploitation
• Monitoring for suspicious activity related to high-privileged access to detect potential attacks

Technical summary

The vulnerability in the RDBMS component of Oracle Database Server allows high-privileged attackers with network access via Oracle Net to compromise RDBMS and gain unauthorized read access to a subset of RDBMS accessible data. The CVSS 3.1 Base Score is 2.7, indicating a low severity. This vulnerability affects versions 19.3-19.32 and 21.3-21.23 of Oracle Database Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of RDBMS accessible data. Defenders should prioritize verifying exposure in their Oracle Database Server instances, especially those with high-privileged access and network connectivity.

Defensive priority

Defenders should prioritize verifying exposure in their Oracle Database Server instances, especially those with high-privileged access and network connectivity.

Recommended defensive actions

• Verify Oracle Database Server versions and configurations to identify potential exposure
• Restrict network access to RDBMS components
• Monitor for suspicious activity related to high-privileged access
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its impact, and affected versions. Oracle's security alert page also provides relevant details. The vulnerability allows high-privileged attackers with network access via Oracle Net to compromise RDBMS and gain unauthorized read access to a subset of RDBMS accessible data. Evidence is based on CVE and NVD data, with limitations on source-provided information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.