CyberSecBulletin
CVE-2025-46123NVD status: Analyzed

Ruckus Unleashed: Use of Externally-Controlled Format String

Published Updated By the CyberSecBulletin desk

CVE-2025-46123 is a high-severity use of externally-controlled format string vulnerability in Ruckus Unleashed from Ruckuswireless, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. The record lists versions 200.15.6.212.14, 200.17.7.0.139 as the first without the flaw, so updating Ruckus Unleashed to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.17% chance of exploitation within 30 days, higher than 68% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Ruckus Unleashed to 200.15.6.212.14 or 200.17.7.0.139, whichever matches your release line, or a later version.
  2. Update Ruckus Zonedirector to 10.5.1.0.279 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
RuckuswirelessRuckus Unleashedbefore 200.15.6.212.14; 200.17 up to, but not including, 200.17.7.0.139200.15.6.212.14, 200.17.7.0.139
RuckuswirelessRuckus Zonedirectorbefore 10.5.1.0.27910.5.1.0.279

Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
HighAdministrator-level access is required first.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).

Official description

An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, and in Ruckus ZoneDirector prior to 10.5.1.0.279, where the authenticated configuration endpoint `/admin/_conf.jsp` writes the Wi-Fi guest password to memory with snprintf using the attacker-supplied value as the format string; a crafted password therefore triggers uncontrolled format-string processing and enables remote code execution on the controller.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Use of Externally-Controlled Format String

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

How developers prevent this class of flaw

  • Choose a language that is not subject to this flaw.
  • Ensure that all format string functions are passed a static string which cannot be controlled by the user, and that the proper number of arguments are always sent to that function as well. If at all possible, use functions that do not support the %n operator in format strings.
  • Run compilers and linkers with high warning levels, since they may detect incorrect usage.

More Use of Externally-Controlled Format String vulnerabilities (CWE-134)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Other vulnerabilities in Ruckus Unleashed

All Ruckus Unleashed vulnerabilities

Recent Use of Externally-Controlled Format String vulnerabilities

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