---
cve: "CVE-2023-27997"
severity: "CRITICAL"
cvss: 9.2
epss: "85.7%"
vendor: "Fortinet"
kev: true
exploited: true
published: "2023-06-13 09:15:16"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T16:19:34+02:00"
---

# CVE-2023-27997

> 9.2 CRITICAL · ⚠️ CISA KEV (1179 Tage) · 🔓 Exploited

## Beschreibung

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:R
```

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

## Schwachstellen-Klasse

- **CWE-122** — Heap-based Buffer Overflow
  A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

## Angriffsmuster (CAPEC)

- [CAPEC-92 — Forced Integer Overflow](https://capec.mitre.org/data/definitions/92.html) _(Severity: High)_

## Referenzen

- <https://fortiguard.com/psirt/FG-IR-23-097>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27997>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-27997) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_