---
cve: "CVE-2022-40674"
severity: "HIGH"
cvss: 8.1
epss: "1.8%"
vendor: "n/a"
kev: false
exploited: false
published: "2022-09-14 11:15:54"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T18:59:42+02:00"
---

# CVE-2022-40674

> 8.1 HIGH · 🧪 PoC

## Beschreibung

libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- d77291a4824d78e697c5dc2b8024fd65ab31e209 (Commit)

## Referenzen

- <https://github.com/libexpat/libexpat/pull/629>
- <https://github.com/libexpat/libexpat/pull/640>
- <https://www.debian.org/security/2022/dsa-5236>
- <https://lists.debian.org/debian-lts-announce/2022/09/msg00029.html>
- <https://security.gentoo.org/glsa/202209-24>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2ZKEPGFCZ7R6DRVH3K6RBJPT42ZBEG/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J2IGJNHFV53PYST7VQV3T4NHVYAMXA36/>
- <https://security.netapp.com/advisory/ntap-20221028-0008/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSVZN3IJ6OCPSJL7AEX3ZHSHAHFOGESK/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGBVQQ47URGJAZWHCISHDWF6QBTV2LE/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LQB6FJAM5YQ35SF5B2MN25Y2FX56EOEZ/>
- <https://security.gentoo.org/glsa/202211-06>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2022-40674) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_