---
cve: "CVE-2023-40481"
severity: "HIGH"
cvss: 7.8
epss: "25.3%"
vendor: "7-Zip"
kev: false
exploited: false
published: "2024-05-03 03:15:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:46:16+02:00"
---

# CVE-2023-40481

> 7.8 HIGH

## Beschreibung

7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.

## CVSS-Vektor

```
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
```

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

## Referenzen

- <https://www.zerodayinitiative.com/advisories/ZDI-23-1164/>
- <https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-40481) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_