---
cve: "CVE-2021-40655"
severity: "HIGH"
cvss: 7.5
epss: "86.7%"
vendor: "n/a"
kev: true
exploited: true
published: "2021-09-24 21:15:07"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-22T23:03:15+02:00"
---

# CVE-2021-40655

> 7.5 HIGH · ⚠️ CISA KEV (889 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

An informtion disclosure issue exists in D-LINK-DIR-605 B2 Firmware Version : 2.01MT. An attacker can obtain a user name and password by forging a post request to the / getcfg.php page

## CNA-Record (Kanon, cvelistV5)

- CNA: **mitre**
- State: PUBLISHED
- Stand: 2025-10-21 23:25:31

## CISA-Anreicherung (vulnrichment/ADP)

- CISA KEV seit: **16.05.2024**
- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **active**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Schwachstellen-Klasse

- **CWE-863** — Incorrect Authorization
  The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

## Referenzen

- <https://www.dlink.com/en/security-bulletin/>
- <https://github.com/Ilovewomen/D-LINK-DIR-605/>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40655>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2021-40655/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_