---
cve: "CVE-2026-6473"
severity: "HIGH"
cvss: 8.8
epss: "1%"
vendor: "n/a"
kev: false
exploited: false
published: "2026-05-14 14:16:24"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T02:15:01+02:00"
---

# CVE-2026-6473

> 8.8 HIGH

## Beschreibung

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds.  This may execute arbitrary code as the operating system user running the database.  In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://www.postgresql.org/support/security/CVE-2026-6473/>
- <https://access.redhat.com/errata/RHSA-2026:22878>
- <https://access.redhat.com/errata/RHSA-2026:26181>
- <https://access.redhat.com/errata/RHSA-2026:26203>
- <https://access.redhat.com/errata/RHSA-2026:26204>
- <https://access.redhat.com/errata/RHSA-2026:26524>
- <https://access.redhat.com/errata/RHSA-2026:26525>
- <https://access.redhat.com/errata/RHSA-2026:26561>
- <https://access.redhat.com/errata/RHSA-2026:27718>
- <https://access.redhat.com/errata/RHSA-2026:27738>
- <https://access.redhat.com/errata/RHSA-2026:27741>
- <https://access.redhat.com/errata/RHSA-2026:27742>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-6473) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_