ReviewHigh

CVE-2026-14668

PostgreSQL, postgresql

Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

CVSS: 8.1
EPSS: 0.33%
CISA KEV: Not listed
Published: 2026.08.13

PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.33%

Technical severityCVSS 8.1

Vulnerability overview

Affected product and versions

Product: PostgreSQL, postgresql
Affected versions: >= 18 < 18.5, >= 17 < 17.11, >= 16 < 16.15, >= 15 < 15.19, >= 14.0 < 14.24, >= 15.0 < 15.19, >= 16.0 < 16.15, >= 17.0 < 17.11, >= 18.0 < 18.5
Fixed versions: Verify the fixed release separately for each affected product line

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that PostgreSQL, postgresql and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE: CWE-843