How severe is CVE-2020-22661?

CVE-2020-22661 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2020-22661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-22661?

CVE-2020-22661 primarily affects Ruckuswireless R310 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-22661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-22661 published?

CVE-2020-22661 was published on 2023-01-20 and last updated on 2026-06-17.

CVE-2020-22661

CVE-2020-22661 is a medium-severity vulnerability in Ruckuswireless R310 Firmware with a CVSS 3.x base score of 6.5. 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-306.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Ruckuswireless R310 Firmware
Published: 2023-01-20
Last modified: 2026-06-17

Description

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 erase the backup secondary official image and write secondary backup unauthorized image.

Frequently asked questions

What is CVE-2020-22661?: 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 erase the backup secondary official image and write secondary backup unauthorized image.
How severe is CVE-2020-22661?: CVE-2020-22661 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2020-22661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-22661?: CVE-2020-22661 primarily affects Ruckuswireless R310 Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-22661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-22661 published?: CVE-2020-22661 was published on 2023-01-20 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:o:ruckuswireless:r310_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:r500_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:r600_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:t300_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:t301n_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:t301s_firmware:10.5.1.0.199:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:scg200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:sz-100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:sz-300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:vsz_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:zonedirector_1100_firmware:9.10.2.0.130:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:10.2.1.0.218:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:zonedirector_3000_firmware:10.2.1.0.218:*:*:*:*:*:*:*
cpe:2.3:o:ruckuswireless:zonedirector_5000_firmware:10.0.1.0.151:*:*:*:*:*:*:*

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CVE-2020-22658 — Critical (CVSS 9.8): 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…
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