Which products and versions are affected by CVE-2014-9727?

Affected: Fritz\!box (Avm). The full list is in the CVE brief.

Is CVE-2014-9727 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 29, 2015.

Is CVE-2014-9727 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2014-9727?

Public exploit code is available.

Is there a fix for CVE-2014-9727?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2014-9727 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2014-9727

CriticalExploitedPublic exploit

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

Published May 29, 2015 · Updated May 6, 2026

Key Facts

Patch immediately

CVE-2014-9727 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Fritz\!box (Avm).
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 29, 2015. Public exploit code is available.
EPSS estimates a 72% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v2

10.0

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

EPSS (30-day exploit likelihood)

72%

Higher than 99.4% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2014-9727 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	May 7, 2020	n/a	Not reported
CIRCL KEV	May 29, 2015	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Fritz\!boxAvm	See advisory	n/a

Timeline

Publicly disclosed
May 29, 2015
Added to CIRCL KEV
May 29, 2015
Added to Industry KEV feed
May 7, 2020
Last updated
May 6, 2026

Weakness Type

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

References

10 more references in the full CVE brief

FAQ

Common Questions.

AVM Fritz!Box allows remote attackers to execute arbitrary commands via shell metacharacters in the var:lang parameter to cgi-bin/webcm.
Affected: Fritz\!box (Avm). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 29, 2015.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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