---
cve: "CVE-2021-27777"
severity: "HIGH"
cvss: 7.5
epss: "81%"
vendor: "HCL Software"
kev: false
exploited: false
published: "2022-05-12 22:15:12"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T23:50:47+02:00"
---

# CVE-2021-27777

> 7.5 HIGH

## Beschreibung

XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.

## CVSS-Vektor

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

| 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 | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097124>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-27777) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_