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PostgreSQL CVE-2026-14669

| EUVDEUVD-2026-57836 HIGH
Heap-based Buffer Overflow (CWE-122)
2026-08-13 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 GHSA-v5vg-62mg-4ccv
RCE PostgreSQL Heap Overflow Buffer Overflow
8.8
CVSS 3.1 · Vendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
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Severity by source

Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-reachable via standard SQL; any authenticated low-privilege user can set timezone and invoke to_char(), yielding full RCE with no user interaction.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
8.8 HIGH
qualitative

Primary rating from Vendor (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007).

CVSS VectorVendor: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Aug 13, 2026 - 14:02 EUVD
Analysis Generated
Aug 13, 2026 - 13:33 vuln.today
CVE Published
Aug 13, 2026 - 13:17 cve.org
HIGH 8.8

DescriptionCVE.org

Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code as the operating system user running the database, via a long POSIX timezone abbreviation. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Articles & Coverage 2

News 18 New PostgreSQL Vulnerabilities - 18 High Severity, No POC Available Aug 14, 2026 News 18 New PostgreSQL Vulnerabilities - 18 High Severity, No POC Available Aug 13, 2026

AnalysisAI

Heap buffer overflow in PostgreSQL's to_char(timestamptz) function allows any authenticated database user to execute arbitrary code as the operating system account running the database process by supplying an excessively long POSIX timezone abbreviation. Affected versions span the actively maintained major release lines: PostgreSQL 14 through 18, with fixes available in 14.24, 15.19, 16.15, 17.11, and 18.5. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Exploit
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Vulnerability AssessmentAI

Exploitation The attacker must hold a valid PostgreSQL database credential with at minimum CONNECT privilege to a database on the target instance - this is the primary gating condition. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) scores 8.8 and accurately reflects the threat model: network-reachable, low complexity, requiring only a low-privilege authenticated database session. … 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 The primary remediation is to upgrade to a patched release: PostgreSQL 14.24, 15.19, 16.15, 17.11, or 18.5 as appropriate for the installed major version. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all PostgreSQL instances running versions 14-18 in production and development environments, and document current versions. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected

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CVE-2026-14669 vulnerability details – vuln.today
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