Vulnerability report

Trusted Third Party Report High Confidence Not in CISA KEV

CVE-2014-9727

Fritz!Box

AVM / Fritz!Box

Watch CVE-2014-9727 Browse KEV feed
Severity
CVSS 10.0 · High
Confidence
High
Exploit status
Trusted Third Party Report
EPSS
72.1%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2014-9727 is an unauthenticated vulnerability affecting AVM Fritz!Box. AVM Fritz!Box allows remote attackers to execute arbitrary commands via shell metacharacters in the var:lang parameter to cgi-bin/webcm.

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Also reported by third-party sources. Confidence is high.

Who is affected?

AVM / Fritz!Box.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Fritz!Box

AVM Fritz!Box allows remote attackers to execute arbitrary commands via shell metacharacters in the var:lang parameter to cgi-bin/webcm.

Published
29 May 2015
Exploitation Attempts Reported
29 May 2015
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
—

Tags

metasploit_scanner

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

The Shadowserver

Recorded 29 May 2015

A trusted third party reported exploitation attempts.

Proof of concept available

Recorded 28 Apr 2025

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
The Shadowserver First 2015-05-29 15:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/fritzbox_echo_exec.rb 28 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v2.0

10.0 High

Potential damage if exploited. Separate from whether attackers are using it.

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

72.1%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

fritzbox_echo_exec

metasploit · Created Unknown

Metasploit module for CVE-2014-9727

Timeline

From disclosure to observed exploitation attempts

  1. 15:02 UTC

    Metasploit module available

    Exploit module available

  2. 15:02 UTC

    Public PoC available

    Public proof-of-concept code published

  3. 15:00 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party report of exploitation attempts

  4. 15:00 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2014-9727

Sample API response 
{
  "cve_id": "CVE-2014-9727",
  "confidence": "High",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.72119,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}