CVE-2020-22657

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 perform WEB GUI login authentication bypass.

Published: 2023-01-20 Last update: 2025-04-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-22657 is rated Moderate Risk (55.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.32%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-22657

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-22 0.24% 0.32% +0.09%
2 2026-01-21 0.12% 0.24% +0.11%
3 2025-11-21 — 0.12% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-22657

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2020-22657

Affected software / configurations for CVE-2020-22657

Vendor Product Version Raw CPE
ruckuswireless r310_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:r310_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless r500_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:r500_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless r600_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:r600_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless t300_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:t300_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless t301n_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:t301n_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless t301s_firmware 10.5.1.0.199 cpe:2.3:o:ruckuswireless:t301s_firmware:10.5.1.0.199:*:*:*:*:*:*:*
ruckuswireless scg200_firmware < 3.6.2.0.795 cpe:2.3:o:ruckuswireless:scg200_firmware:*:*:*:*:*:*:*:*
ruckuswireless sz-100_firmware < 3.6.2.0.795 cpe:2.3:o:ruckuswireless:sz-100_firmware:*:*:*:*:*:*:*:*
ruckuswireless sz-300_firmware < 3.6.2.0.795 cpe:2.3:o:ruckuswireless:sz-300_firmware:*:*:*:*:*:*:*:*
ruckuswireless vsz_firmware < 3.6.2.0.795 cpe:2.3:o:ruckuswireless:vsz_firmware:*:*:*:*:*:*:*:*
ruckuswireless zonedirector_1100_firmware 9.10.2.0.130 cpe:2.3:o:ruckuswireless:zonedirector_1100_firmware:9.10.2.0.130:*:*:*:*:*:*:*
ruckuswireless zonedirector_1200_firmware 10.2.1.0.218 cpe:2.3:o:ruckuswireless:zonedirector_1200_firmware:10.2.1.0.218:*:*:*:*:*:*:*
ruckuswireless zonedirector_3000_firmware 10.2.1.0.218 cpe:2.3:o:ruckuswireless:zonedirector_3000_firmware:10.2.1.0.218:*:*:*:*:*:*:*
ruckuswireless zonedirector_5000_firmware 10.0.1.0.151 cpe:2.3:o:ruckuswireless:zonedirector_5000_firmware:10.0.1.0.151:*:*:*:*:*:*:*

References for CVE-2020-22657

cvelogic Threat Intelligence