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R310 FirmwareOperating system · Ruckuswireless

CVE-2020-22653

CRITICAL · 9.8 CVSS v3.1 Published 2023-01-20
Fix available
A fix is available. Upgrade to 3.6.2.0.795 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In Ruckus R310 10.5.1.0.199, Ruckus R500 10.5.1.0.199, Ruckus R600 10.5.1.0.199, Ruckus T300 10.5.1.0.199, Ruckus T301n 10.5.1.0.199, Ruckus T301s 10.5.1.0.199, SmartCell Gateway 200 (SCG200) before 3.6.2.0.795, SmartZone 100 (SZ-100) before 3.6.2.0.795, SmartZone 300 (SZ300) before 3.6.2.0.795, Virtual SmartZone (vSZ) before 3.6.2.0.795, ZoneDirector 1100 9.10.2.0.130, ZoneDirector 1200 10.2.1.0.218, ZoneDirector 3000 10.2.1.0.218, ZoneDirector 5000 10.0.1.0.151, a vulnerability allows attackers to exploit the official image signature to force injection unauthorized image signature.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-347

The application accepts signed data without properly verifying the signature, so an attacker can forge or tamper with content that the system is meant to trust — tokens, updates, licences. Everything built on that trust then becomes unreliable. Remediation is verifying every signature against the correct key and rejecting anything that does not validate.

General guidance for the improper signature verification class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
R310 FirmwareOperating system
Affected:= 10.5.1.0.199
R500 FirmwareOperating system
Affected:= 10.5.1.0.199
R600 FirmwareOperating system
Affected:= 10.5.1.0.199
T300 FirmwareOperating system
Affected:= 10.5.1.0.199
T301n FirmwareOperating system
Affected:= 10.5.1.0.199
T301s FirmwareOperating system
Affected:= 10.5.1.0.199
Scg200 FirmwareOperating system
Affected:< 3.6.2.0.795
Sz 100 FirmwareOperating system
Affected:< 3.6.2.0.795

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 3.6.2.0.795 or later
Fixed in 3.6.2.0.795
Vendor patch support.ruckuswireless.com →
Recommended fix Moderate confidence

Firmware 3.6.2.0.795 or later for SCG200/SZ100; contact Ruckus support for specific fixed version for R310/R500/R600/T300/T301n/T301s/ZoneDirector models

  1. 1. Identify the exact Ruckus device model from the affected product list (R310, R500, R600, T300, T301n, T301s, SCG200, SZ 100, vSZ, or ZoneDirector variants)
  2. 2. Access the Ruckus Support portal at https://support.ruckuswireless.com/security_bulletins/302 to obtain the device-specific firmware fix
  3. 3. For SCG200 and SZ 100 devices: Upgrade to firmware version 3.6.2.0.795 or later
  4. 4. For R310, R500, R600, T300, T301n, T301s: Apply the firmware version specified in the security bulletin (10.5.1.0.199 is the affected version - newer version required)
  5. 5. Verify the firmware integrity by checking the signature verification passes after upgrade
  6. 6. Confirm the upgrade was successful by reviewing the device dashboard for the new firmware version
Caveat Firmware upgrades may cause temporary service disruption; ensure backup of configuration before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $2,300. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-22653 in production — separate from our analysis above.

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