How severe is CVE-2025-46121?

CVE-2025-46121 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-46121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-46121?

CVE-2025-46121 primarily affects Ruckuswireless Ruckus Unleashed. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-46121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-46121 have an EU (EUVD) identifier?

Yes. CVE-2025-46121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22107.

When was CVE-2025-46121 published?

CVE-2025-46121 was published on 2025-07-21 and last updated on 2026-06-17.

CVE-2025-46121

CVE-2025-46121 is a critical-severity vulnerability in Ruckuswireless Ruckus Unleashed with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-134.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22107
Weakness: CWE-134
Affected product: Ruckuswireless Ruckus Unleashed
Published: 2025-07-21
Last modified: 2026-06-17

Description

An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, where the functions `stamgr_cfg_adpt_addStaFavourite` and `stamgr_cfg_adpt_addStaIot` pass a client hostname directly to snprintf as the format string. A remote attacker can exploit this flaw either by sending a crafted request to the authenticated endpoint `/admin/_conf.jsp`, or without authentication and without direct network access to the controller by spoofing the MAC address of a favourite station and embedding malicious format specifiers in the DHCP hostname field, resulting in unauthenticated format-string processing and arbitrary code execution on the controller.

Frequently asked questions

What is CVE-2025-46121?: An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, where the functions `stamgr_cfg_adpt_addStaFavourite` and `stamgr_cfg_adpt_addStaIot` pass a client hostname directly to snprintf as the format string. A remote attacker can exploit this flaw either by sending a crafted request to the authenticated endpoint `/admin/_conf.jsp`, or without authentication and without direct network access to the controller by spoofing the MAC address of a favourite station and embedding malicious format specifiers in the DHCP hostname field, resulting in unauthenticated format-string processing and arbitrary code execution on the controller.
How severe is CVE-2025-46121?: CVE-2025-46121 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-46121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-46121?: CVE-2025-46121 primarily affects Ruckuswireless Ruckus Unleashed. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-46121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-46121 have an EU (EUVD) identifier?: Yes. CVE-2025-46121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22107.
When was CVE-2025-46121 published?: CVE-2025-46121 was published on 2025-07-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ruckuswireless:ruckus_unleashed:*:*:*:*:*:*:*:*
cpe:2.3:a:ruckuswireless:ruckus_zonedirector:*:*:*:*:*:*:*:*

More vulnerabilities in Ruckuswireless Ruckus Unleashed

CVE-2025-46120 — Critical (CVSS 9.8): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.27 and 200.18.7.1.323, and in Ruckus…
CVE-2025-46122 — Critical (CVSS 9.1): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, where the…
CVE-2025-46117 — Critical (CVSS 9.1): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, and in Ruckus…
CVE-2025-46116 — High (CVSS 8.8): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, and in Ruckus…
CVE-2025-46123 — High (CVSS 7.2): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.14 and 200.17.7.0.139, and in Ruckus…
CVE-2025-46119 — Medium (CVSS 6.3): An issue was discovered in CommScope Ruckus Unleashed prior to 200.15.6.212.27 and 200.18.7.1.323, and in Ruckus…

All CVEs affecting Ruckuswireless Ruckus Unleashed →

Other CWE-134 vulnerabilities

CVE-2012-1851 — Critical (CVSS 10.0): Format string vulnerability in the Print Spooler service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2,…
CVE-2012-0242 — Critical (CVSS 10.0): Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary…
CVE-2011-2475 — Critical (CVSS 10.0): Format string vulnerability in ECTrace.dll in the iMailGateway service in the Internet Mail Gateway in OneBridge Server…
CVE-2011-1568 — Critical (CVSS 10.0): Format string vulnerability in the logText function in shmemmgr9.dll in IGSSdataServer.exe 9.00.00.11074, and…
CVE-2010-4235 — Critical (CVSS 10.0): Format string vulnerability in RealNetworks Helix Server 12.x, 13.x, and 14.x before 14.2, and Helix Mobile Server…
CVE-2011-0270 — Critical (CVSS 10.0): Format string vulnerability in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows…

Browse all CWE-134 vulnerabilities →