---
cve: "CVE-2026-14677"
severity: "HIGH"
cvss: 8.8
epss: "42%"
vendor: "n/a"
kev: false
exploited: false
published: "2026-08-13 13:17:45"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T08:51:22+02:00"
---

# CVE-2026-14677

> 8.8 HIGH

## Beschreibung

Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies.  This may execute arbitrary code as the operating system user running the database.  CVE-2026-6473 had fixed similar problems.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 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-2026-14677/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-14677) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_