CVE-2026-14669 PostgreSQL CVE debrief

Who should care

Administrators and users of PostgreSQL databases, especially those with untrusted users or exposure to the database from untrusted networks, should be aware of the potential impact of this vulnerability. They should prioritize upgrading to patched versions to prevent potential code execution. Additionally, they should restrict access to the database to trusted users only and monitor database logs for suspicious activity. This vulnerability can have significant operational impact if exploited, and therefore, it is crucial for affected parties to take immediate action to mitigate the risk. The vulnerability affects various PostgreSQL versions, and users should verify their versions and apply patches accordingly. Security teams and vulnerability management teams should also be aware of this vulnerability and ensure that necessary measures are taken to protect their systems. This includes reviewing compensating controls for exposed systems while remediation is scheduled and verified, and tracking exceptions and retesting remediated assets. By taking these steps, administrators and users can minimize the risk associated with this vulnerability and protect their PostgreSQL databases from potential attacks. The CVE record was published on 2026-08-13T13:17:44.280Z and has not been modified since then. The NVD entry is currently Modified. Evidence from the NVD and PostgreSQL vendor advisory supports this assessment. The vulnerability has a high CVSS score of 8.8, indicating a high severity level. Therefore, it is essential for affected parties to take immediate action to mitigate the risk associated with this vulnerability. The vulnerability is a heap buffer overflow, which can allow an attacker to execute arbitrary code as the operating system user running the PostgreSQL database. This can have significant consequences, including data breaches and system compromise. By prioritizing upgrades to patched versions, restricting access to the database, and monitoring database logs, administrators and users can minimize the risk associated with this vulnerability and protect their PostgreSQL databases from potential attacks. The CVE-2026-14669 vulnerability is a significant威胁,

Technical summary

The CVE-2026-14669 vulnerability is a heap buffer overflow in the to_char(timestamptz) function of PostgreSQL. This vulnerability allows a user with the ability to choose a timezone to execute arbitrary code as the operating system user running the PostgreSQL database. The vulnerability is due to a long POSIX timezone abbreviation. Versions of PostgreSQL before 18.6, 17.11, 16.15, 15.19, and 14.24 are affected by this vulnerability.

Defensive priority

Administrators of PostgreSQL databases should prioritize upgrading to patched versions to prevent potential code execution.

Recommended defensive actions

• Upgrade PostgreSQL to version 18.6, 17.11, 16.15, 15.19, or 14.24, or later
• Restrict access to the database to trusted users only
• Monitor database logs for suspicious activity
• 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-2026-14669 vulnerability is a heap buffer overflow in PostgreSQL's to_char(timestamptz) function, allowing arbitrary code execution as the operating system user running the database. Affected versions include PostgreSQL before 18.6, 17.11, 16.15, 15.19, and 14.24. Evidence from the NVD and PostgreSQL vendor advisory supports this assessment.

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.