---
cve: "CVE-2020-27134"
severity: "CRITICAL"
cvss: 9.9
epss: "1.7%"
vendor: "Cisco"
kev: false
exploited: false
published: "2020-12-11 17:15:13"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T18:38:51+01:00"
---

# CVE-2020-27134

> 9.9 CRITICAL

## Beschreibung

Multiple vulnerabilities in Cisco Jabber for Windows, Jabber for MacOS, and Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system (OS) with elevated privileges or gain access to sensitive information. For more information about these vulnerabilities, see the Details section of this advisory.

## CNA-Record (Kanon, cvelistV5)

- CNA: **cisco**
- State: PUBLISHED
- Stand: 2024-11-13 17:36:34
- CNA-CVSS: **9.9** (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-201** — Insertion of Sensitive Information Into Sent Data
  The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

## Angriffsmuster (CAPEC)

- [CAPEC-12 — Choosing Message Identifier](https://capec.mitre.org/data/definitions/12.html) _(Severity: High)_
- [CAPEC-217 — Exploiting Incorrectly Configured SSL/TLS](https://capec.mitre.org/data/definitions/217.html)
- [CAPEC-612 — WiFi MAC Address Tracking](https://capec.mitre.org/data/definitions/612.html) _(Severity: Low)_
- [CAPEC-613 — WiFi SSID Tracking](https://capec.mitre.org/data/definitions/613.html) _(Severity: Low)_
- [CAPEC-618 — Cellular Broadcast Message Request](https://capec.mitre.org/data/definitions/618.html) _(Severity: Low)_
- [CAPEC-619 — Signal Strength Tracking](https://capec.mitre.org/data/definitions/619.html) _(Severity: Low)_
- [CAPEC-621 — Analysis of Packet Timing and Sizes](https://capec.mitre.org/data/definitions/621.html) _(Severity: Low)_
- [CAPEC-622 — Electromagnetic Side-Channel Attack](https://capec.mitre.org/data/definitions/622.html) _(Severity: Low)_

## Referenzen

- <https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-ZktzjpgO>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2020-27134/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_